- anim_uuids.xlsx lists all animations in the database and used by shipped avatars, as well as their UUIDs.

- base_mesh.md5mesh is the same as Policeman_12.md5mesh. All the animations in this folder with the exception of bed.md5anim bed3.md5anim are from Policeman_12. Policeman_12 was chosen because its t-pose resembles a true t-pose more closely than all the other character model's t-poses, which helps with retargetting.

- I don't know where bed.md5anim came from, but it has 55 joints and is used by many of our older models, as they also have 55 joints.

- bed3.md5anim is the same as CMan0015/anims/bed.md5anim, and bed3_base_mesh.md5mesh is the same as CMan0015/CMan0015.md5mesh. It's used in the database instead of bed.md5anim as I can more reliably retarget it since I know the source of its base pose.
