HI Cairyn.
don't let yourself fool by C4D's rigging tools. They mirror the industry state of 2010 or so. In the last 10-15 years the VFX industry used a hybrid approach with tools like Maya's nCloth for skin and muscle, which ist realistic, but really time and calculation intense:
https://www.cgcircuit.com/course/skinning-with-ncloth-part-2?utm_source=CGCircuit+Group&utm_campaign=6830f8ce80-NewCoursesAtCGCircuit_Oct201510_1_2015&utm_medium=email&utm_term=0_2d17e3e116-6830f8ce80-
Then about 10 years ago Ziva took tht approach to the max and developed skin simulation specific tools:
https://zivadynamics.com/ziva-vfx
The problem always was C4D Cloth could not do it and lacks secondary controls like morph compatability etc.