Hii, here is a list of all the factions that are counted by the script that assign effects based on the diplomacy agreements the player make and the number of them:

• wh_main_sc_emp_empire
  
• wh2_dlc11_emp_empire_dil
  
• wh2_dlc13_emp_golden_order
  
• wh2_dlc13_emp_the_huntmarshals_expedition
  
• wh2_dlc16_emp_empire_invasion
  
• wh2_main_emp_new_world_colonies
  
• wh2_main_emp_sudenburg
  
• wh_main_emp_averland
  
• wh_main_emp_empire
  
• wh_main_emp_empire_separatistswh_main_emp_hochland
  
• wh_main_emp_marienburg
  
• wh_main_emp_middenland
  
• wh_main_emp_nordland
  
• wh_main_emp_ostermark
  
• wh_main_emp_ostland
  
• wh_main_emp_stirland
  
• wh_main_emp_talabecland
  
• wh_main_emp_wissenland
  
• wh_main_vmp_vampire_counts
  
• wh_main_vmp_schwartzhafen
  
• wh_main_vmp_mousillon
  
• wh2_main_vmp_the_silver_host
  
• wh2_dlc11_vmp_the_barrow_legion
  
• wh_main_brt_artois
  
• wh_main_brt_bastonne
  
• wh_main_brt_bordeleaux
  
• wh_main_brt_bretonnia
  
• wh2_dlc14_brt_chevaliers_de_lyonesse
  
• wh_main_brt_carcassonne
  
• wh_main_brt_lyonesse
  
• wh_main_brt_parravon
  
• wh2_dlc11_brt_bretonnia_dil
  
• wh2_main_brt_knights_of_origo
  
• wh2_main_brt_knights_of_the_flame
  
• wh2_main_brt_thegans_crusaders
  
• wh_main_teb_border_princes
  
• wh_main_teb_estalia
  
• wh_main_teb_tilea
  
• wh_main_ksl_kislev
  
• wh3_main_ksl_brotherhood_of_the_bear
  
• wh3_main_ksl_druzhina_enclave
  
• wh3_main_ksl_ropsmenn_clan
  
• wh3_main_ksl_the_great_orthodoxy
  
• wh3_main_ksl_the_ice_court
  
• wh3_main_ksl_ungol_kindred
  
• wh3_main_ksl_ursun_revivalists
  
• wh2_dlc09_skv_clan_rictus
• wh2_dlc12_skv_clan_fester
  
• wh2_dlc12_skv_clan_mange
  
• wh2_dlc15_skv_clan_ferrik
• wh2_dlc15_skv_clan_kreepus
  
• wh2_dlc15_skv_clan_volkn
• wh2_dlc16_skv_clan_gritus
  
• wh2_main_skv_clan_eshin
• wh2_main_skv_clan_gnaw
• wh2_main_skv_clan_mordkin
  
• wh2_main_skv_clan_mors
• wh2_main_skv_clan_moulder
  
• wh2_main_skv_clan_pestilens
• wh2_main_skv_clan_septik
• wh2_main_skv_clan_skyre
• wh2_main_skv_clan_spittel
  
• wh2_main_skv_skaven
  
• wh2_main_skv_grey_seer_clan

If you want any other vanilla faction added to the list pls note it down here.

P.S. I haven't tried if adding a modded faction to the list break or not the script for those who doesn't have that faction. I don't think so, but if anyone requests a modded faction to be added I'll make a test :3