I converted toyxyz's gumroad rig for Open Pose (https://toyxyz.gumroad.com/l/ciojz) to both Motion Builder friendly / Unreal friendly rigs for use with motion capture pipelines for some friends struggling with the complicated blender only rig. Download here: https://drive.google.com/file/d/1B-bbJReirxiyNQQRuzHvLNewUQV4om-a/view