@Utopiah did sphere hand tracking here #394 (comment)
There is this pending PR #445 to sync dotted hands

I did a simple networked head tracking in https://github.com/networked-aframe/naf-valid-avatars

Other relevant resources for arms tracking

• moving arms with FullBodyIKSolver and CCDIKSolver https://threejs.org/examples/jsm/animation/CCDIKSolver.js
  https://threejs.org/examples/?q=s#webgl_animation_skinning_ik
• fullbody PR in hubs that includes a customized CCDIKSolver Full-body avatar Hubs-Foundation/hubs#6428

Fullbody vrm avatars synced over websocket

• https://github.com/msub2/avatars
• https://github.com/msub2/aframe-exokit-avatars

And now fullbody tracking in WebXR on Quest 2, Quest Pro and Quest 3
https://twitter.com/mrmaxm/status/1765418126563242454

Someone want to work on a networked-aframe fullbody tracking for avatars using a mixamo skeleton?