Here's the male model I use for a few of my animations. I plan to redo it completely since I keep learning more about converting Daz models but I felt I should share it anyway.
The penis TARGET/CONTROLLER bone has ik and rotation switches on it if you want to toggle them off yourself. You can also scale it and the rest of the peen should follow. Same for the sac.
Eevee / Rigify / Append MAIN Collection
Check the MEGA folder for the download!