Blender Rigs

Hozq's Low-Poly

LowPoly, Stylized

IK / FK

Blender 3.5+

RadPas Insurgency

Midpoly, IK / FK

Blender 3.3+

Multiple meshes

MonoGA CSS

Midpoly

Blender 4.1+

3Ds Max Rigs

jericho_team MWII Multi-Rig

Hi-MidPoly

Max 2022

ImBrokeRU's

CSS RIG+

MidPoly

Max 2012

(so old...)

Maya Rigs

huh?.