Name: Custom Player Model (CPM)
Link: https://www.curseforge.com/min…s/custom-player-model-cpm
The mod adds the ability to add custom player models using JSON and textures.
Someone has already requested it, and it was approved. However, the mod only shows up when using Forge for 1.12. If I search the mod while using Fabric, the mod is not found. I suspect that this is because the game version on the mod's page still says Forge or it has to be added as a Fabric mod separately.
Have a nice day.