I recommend using the Fullscreen Barbershop mod https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2220326926 to better handle the increased number of Barbershop categories.

If you do, place it above the Amerindian Steppe Tribe and any compatches in the load order in the Launcher.

No additional compatch needed. Only issue between the mods is not being able to select character poses directly in the Barbershop but you can use the 'Customize' character interaction to select some poses for male characters of this culture.

The Barbershop window is getting large due to all the categories added by EPE and this mod.

You can move the Barbershop window by clicking and holding it. If scrolling a category gets interrupted by the window's positioning use the actual scrollbar on the right inside the category listing