Here is the list of all 104 units for the Western Roman Empire, Eastern Roman Empire and the Roman Expedition of The last Roman DLC.

All screenshots are available on my Total War Center thread in the section Units List. All these awesome screenshots have been made by DramaBelli.

Romani Units Pack thread on Total War Center[www.twcenter.net]

In the normal version all units are recruitable in all regions if you built the required buildings.

In the AOR version all units are only recruitable in their specific AOR region if you built the required buildings.

UNIT NAME
(Tier Level - Unit Class - AOR region)

WESTERN ROMAN EMPIRE

The Western Roman Empire can recruit 31 units:

31 Units by Swiss Halberdier and DramaBelli

Auxilia Palatina - Sagittarii Nervi
(T3 - inf_bow - AOR_Gaul)

Legio Palatina - Pannoniciani Seniores
(T3 - inf_sword - AOR_att_prov_pannonia)

Legio Comitatensis - Ursarienses (Funditores)
(T2 - inf_sling - AOR_att_prov_lugdunensis)

Auxilia Palatina - Petulantes Seniores
(T3 - inf_spear - AOR_att_prov_liguria)

Auxilia Palatina - Victores Iuniores
(T3 - inf_javelin - AOR_att_prov_tarraconensis)

Legio Comitatensis - Septimani Iuniores
(T2 - inf_spear - AOR_att_prov_baetica)

Legio Comitatensis - Tertiani
(T2 - inf_sword - AOR_att_prov_raetia_et_noricum)

Legio Comitatensis - Secunda Britannica
(T2 - inf_sword - AOR_att_prov_britannia_inferior)

Legio Palatina - Lanciarii Sabarienses
(T3 - inf_spear - AOR_att_prov_maxima_sequanorum)

Vexillatio Comitatensis - Equites Honoriani Seniores
(T2 - cav_shock - AOR_Gaul)

Auxilia Palatina - Heruli Seniores
(T2 - inf_sword - AOR_att_prov_venetia)

Vexillatio Palatina - Comites Alani
(T3 - cav_shock - AOR_Dalmatia_Pannonia_Dardania_Macedonia)

Legio Palatina - Octavani
(T3 - inf_sword - AOR_Italia)

Legio Pseudo Comitatensis - Martenses
(T1 - inf_sword - AOR_att_prov_lugdunensis)

Auxilia Palatina - Seguntienses
(T2 - inf_javelin - AOR_att_prov_dalmatia)

Foederati Heriban
(T1 - inf_axe - AOR_Germania)

Foederati Franci
(T2 - inf_axe - AOR_Gaul)

Vexillatio Comitatensis - Equites Mauri Feroces
(T1 - cav_melee - AOR_att_prov_magna_graecia)

Legio Tertia Italica - Lanciarii
(T1 - inf_spear - AOR_att_prov_raetia_et_noricum)

Legio Comitatensis - Cortoriacenses
(T2 - inf_sword - AOR_att_prov_belgica)

Vexillatio Comitatensis - Equites Sagittarii Clibanarii
(T3 - cav_shock - AOR_att_prov_africa)

Auxilia Palatina - Mauri Tonantes Iuniores
(T2 - inf_spear - AOR_att_prov_mauretania)

Auxilia Palatina - Felices Seniores
(T3 - inf_spear - AOR_Hispania)

Legio Comitatensis - Tertio Augustani
(T2 - inf_sword - AOR_att_prov_mauretania)

Milites Classiarii Riparienses
(T2 - inf_sword - AOR_Germania)

Auxilia Palatina - Honoriani Marcomanni Seniores
(T3 - inf_sword - AOR_Italia)

Auxilia Palatina - Sagittarii Venatores
(T3 - inf_bow - AOR_att_prov_dalmatia)

Legio Pseudo Comitatensis - Defensores Seniores
(T2 - inf_javelin - AOR_att_prov_lugdunensis)

Vexillatio Comitatensis - Equites Armigeri
(T2 - cav_melee - AOR_Gaul)

Vexillatio Palatina - Equites Constantes Valentinianenses Seniores
(T3 - cav_melee - AOR_att_prov_italia)

Cuneus Sarmatarum
(T3 - cav_shock - AOR_Britannia)


EASTERN ROMAN EMPIRE

The Eastern Roman Empire can recruit 36 units:

31 Units by Swiss Halberdier and DramaBelli

Legio Palatina - Ioviani Iuniores
(T3 - inf_sword - AOR_att_prov_dardania)

Legio I Armeniaca - Lanciarii
(T2 - inf_javelin - AOR_Armenia_Caucasia)

Pseudocomitatensis - Legio I Armeniaca
(T2 - inf_spear - AOR_Armenia_Caucasia)

Foederati Gothi
(T2 - inf_sword - AOR_Dalmatia_Pannonia_Dardania_Macedonia)

Legio Quartodecimani - Lanciarii
(T2 - inf_javelin - AOR_att_prov_pannonia)

Legio Comitatensis - Quartodecimani
(T2 - inf_sword - AOR_att_prov_pannonia)

Vexillatio Palatina - Comites Taifali
(T2 - cav_bow - AOR_att_prov_dacia)

Legio Palatina - Lanciarii Seniores 'Invicti'
(T3 - inf_spear - AOR_att_prov_thracia)

Milites Dacisci
(T1 - inf_sword - AOR_Dacia_Thracia)

Auxilia Palatina - Felices Honoriani Seniores
(T3 - inf_spear - AOR_att_prov_syria)

Auxilia Palatina - Ascarii Seniores
(T2 - inf_sword - AOR_att_prov_dardania)

Legio Comitatensis - Balistarii Seniores
(T3 - inf_crossbow - AOR_Asia)

Auxilia Palatina - Hiberi
(T3 - inf_javelin - AOR_att_prov_asia)

Legio Comitatensis Tertia Diocletiana Thebaeorum
(T2 - inf_spear - AOR_att_prov_thracia)

Legio Palatina - Primani
(T3 - inf_sword - AOR_Dacia_Thracia)

Milites Primi Constantini
(T1 - inf_spear - AOR_Dacia_Thracia)

Pseudo Comitatensis - Legio I Isaura Sagittaria
(T2 - inf_bow - AOR_att_prov_cilicia)

Auxilia Palatina - Sagittarii Seniores Orientales
(T3 - inf_bow - AOR_att_prov_syria)

Vexillatio Comitatensis - Equites Cataphractarii Ambianenses
(T3 - cav_shock - AOR_att_prov_thracia)

Foederati Hunni
(T1 - cav_bow - AOR_Sarmatia)

Vexillatio Palatina - Equites Brachiati Iuniores
(T2 - cav_melee - AOR_att_prov_macedonia)

Limitanei Primi Parthi
(T1 - cav_bow - AOR_att_prov_osroene)

Schola Scutariorum Sagittariorum
(T3 - cav_bow - AOR_att_prov_thracia)

Schola Scutariorum Clibanariorum
(T3 - cav_shock - AOR_att_prov_thracia)

Legio Palatina - Fortenses
(T3 - inf_sword - AOR_att_prov_aegyptus)

Transtigritani
(T2 - inf_spear - AOR_att_prov_aegyptus)

Domestici Pedites
(T3 - inf_spear - AOR_att_prov_thracia)

Excubitores
(T3 - inf_sword - AOR_att_prov_thracia)

Pseudo Comitatensis - Sexta Parthica (Sagittarii)
(T2 - inf_bow - AOR_Syria_Palaestina)

Pseudo Comitatensis - Fortenses Auxiliarii (Funditores)
(T2 - inf_sling - AOR_Syria_Palaestina)

Legio Quarta Parthica (Quartoparthoi)
(T2 - inf_spear - AOR_att_prov_osroene)


5 Renovatii Units by DramaBelli and Cpt. Cortes

Legio Palatina - Daci
(T2 - att_inf_sword_land - AOR_att_prov_thracia)

Legio Palatina - Matiarii Seniores
(T3 - att_inf_sword_land - AOR_att_prov_thracia)

Auxilia Palatina - Felices Theodosiani
(T2 - att_inf_sword_land - AOR_att_prov_thracia)

Auxilia Palatina - Regii
(T3 - att_inf_sword_land - AOR_att_prov_thracia)

Legio Comitatensis - Quinta Macedonica
(T3 - att_inf_sword_land - AOR_att_prov_aegyptus)


ROMAN EXPEDITION

The Roman Expedition can recruit 37 units:

16 Units by Swiss Halberdier and DramaBelli

Vexillatio Comitatensis - Equites Armigeri
(T2 - cav_melee - AOR_bel_prov_flaminia_et_picenum)

Spatharii
(T3 - inf_sword - AOR_bel_prov_byzacena)

Lybii Iustiniani
(T3 - inf_javelin - AOR_bel_prov_africa_proconsularis)

Vandali Iustiniani
(T3 - cav_melee - AOR_bel_prov_africa_proconsularis)

Numidae Iustiniani
(T2 - cav_javelin - AOR_BEL_Africa)

Pedites Bucellarii
(T2 - inf_sword - AOR_bel_prov_africa_proconsularis)

Lanciarii
(T2 - inf_spear - AOR_bel_prov_byzacena)

Limitanei - Lykokranitai
(T1 - inf_sword - recruitable everywhere)

Optimates
(T3 - cav_melee - AOR_bel_prov_flaminia_et_picenum)

Primi Theodosiani
(T2 - inf_sword - AOR_bel_prov_italia)

Primi Felices Iustiniani
(T2 - inf_sword - AOR_bel_prov_africa_proconsularis)

Lanciarii Iuniores
(T3 - inf_spear - AOR_bel_prov_byzacena)

Toxoto Dalmatae
(T3 - inf_bow - AOR_bel_prov_flaminia_et_picenum)

Primoscutarii
(T3 - inf_spear - AOR_bel_prov_byzacena)

Numerus Armeniorum
(T2 - inf_javelin - AOR_bel_prov_flaminia_et_picenum)

Socii Slavi
(T1 - inf_axe - AOR_bel_prov_venetia_et_histria)


21 Renovatii Units by DramaBelli and Cpt. Cortes

Numerus Persoiustinianorum
(T2 - att_cav_melee_land - AOR_BEL_Italia)

Equites Perso - Iustiniani
(T3 - att_cav_shock_land - AOR_BEL_Italia)

Equites Perso - Armenii
(T2 - att_cav_shock_land - AOR_BEL_Italia)

Numerus Invictorum
(T3 - att_inf_sword_land - AOR_BEL_Italia)

Numerus Sermisianus
(T2 - att_inf_sword_land - AOR_BEL_Italia)

Numerus Theodosiacus
(T2 - att_inf_sword_land - AOR_BEL_Italia)

Regii
(T3 - att_inf_sword_land - AOR_BEL_Italia)

Numerus Cadisianus
(T2 - att_inf_sword_land - AOR_BEL_Italia)

Theodosiaci Victores
(T2 - att_inf_spear_land - AOR_BEL_Italia)

Felices Laetorum
(T2 - att_inf_bow_land - AOR_BEL_Italia)

Numerus Felicium Theodosiacus
(T2 - att_inf_sword_land - AOR_BEL_Italia)

Numerus Dacorum
(T2 - att_inf_sword_land - AOR_BEL_Italia)

Theodosiaci Balistarii
(T3 - att_inf_crossbow_land - AOR_BEL_Africa)

Numerus Devotissimi Theodosiaci
(T3 - att_inf_sword_land - AOR_BEL_Africa)

Paraetonitae Iustiniani
(T3 - att_inf_sword_land - AOR_BEL_Africa)

Voluntarii
(T1 - att_inf_spear_land - AOR_BEL_Africa)

Mattiarii
(T3 - att_inf_sword_land - AOR_BEL_Dalmatia)

Legio Quinta Macedonica
(T3 - att_inf_sword_land - AOR_bel_prov_byzacena)

Leones Clibanarii
(T2 - att_cav_shock_land - AOR_bel_prov_byzacena)

Scythae Iustiniani
(T2 - att_inf_spear_land - AOR_bel_prov_byzacena)

Numerus Pharanitai
(T2 - att_inf_sword_land - AOR_bel_prov_byzacena)