The patch did not add new models, but skins for existing blueprints instead. Therefor all default skins are still available. The mod tools are very outdated (April 2020), that is why the skins are not applied in those entities.
The skinnames can be found in the Archive Viewer:
Set the names in ebps/ui_ext:
Animator_set_state is an action type that can be added in action_apply_ext in ebps.
All new skins:
Cavalry Riflemen:
blueprint: armies\aef\soldiers\rifleman\rifleman
skin_summer: cavalry_summer
skin_winter: cavalry_winter
Assault Section:
blueprint: armies\british\soldiers\tommy\tommy
skin_summer: assault_summer
skin_winter: assault_winter
Raid Section:
blueprint: armies\british\soldiers\sniper\raid
skin_summer: raid_summer
skin_winter: raid_winter
Conscript Sergeant:
blueprint: armies\soviet\soldiers\conscript\conscript_newrifle
skin_summer: sergeant_summer
skin_winter: sergeant_winter
Assault Guards:
blueprint: armies\soviet\soldiers\conscript\conscript_newrifle
skin_summer: guard_summer
skin_winter: guard_winter
Airborne Guards (with sniper model in winter):
blueprint: armies\soviet\soldiers\sniper\sniper
skin_summer: paratrooper_summer
skin_winter: <empty>
Airborne Guards (with engineer model in winter):
blueprint: armies\soviet\soldiers\riflemen_airborne\riflemen_airborne
skin_summer: paratrooper_summer
skin_winter: paratrooper_winter
Assault Grenadiers:
blueprint: armies\west_german\soldiers\honour_guard\assault_grenadier_new
skin_summer: assault_summer
skin_winter: assault_winter
Jaeger command_Squad and
Jaeger Light Infantry:
blueprint: armies\german\soldiers\sniper\jeagar
skin_summer: jeagar_summer
skin_winter: jeagar_winter
Jaeger Officer (unused):
blueprint: armies\west_german\soldiers\brigadefuhrer\brigadefuhrer
skin_summer: jeagar_summer
skin_winter: <empty>
Luftwaffe Officer:
blueprint: armies\west_german\soldiers\brigadefuhrer\brigadefuhrer
skin_summer: luftwaffe_summer
skin_winter: luftwaffe_winter
HMG34 crew:
blueprint: armies\german\soldiers\hmg\hmg
skin_summer: west_summer
skin_winter: west_winter
OKW Medic:
blueprint: armies\german\soldiers\medic\medic
skin_summer: west_summer
skin_winter: west_winter