Update: after some research, I was able change the clipset by streaming a metapeds.ymt file. Inspired by this tutorial (How To Add a New Custom Horse), I created a new ped based on an original ped; in my case, it was cs_dutch. In the tag <WeaponAnimationsGroup>, set it to player. If you’re using CodeX, it’ll look like so:
<WeaponAnimationsGroup>player</WeaponAnimationsGroup>
Or if using OpenIV:
<UNK_MEMBER_0x44F4F2CA>0x6F0783F5</UNK_MEMBER_0x44F4F2CA>
I haven’t tried replacing built-in peds rather than adding new working ones but RedM is having issues signing in at the moment. Anyways…
Happy modding!