For a project I have to make a built-in pivot link, even if I have several ideas on how it can be made, would anyone know of an already existing list of solutions? I've been looking on the Internet for 2 hours, I can't find anything.
I don't really understand your question. For me, it is enough to make a kinematic pivot (axis/axis coincidence, then plane/plane). Then, you put an angle constraint that you activate or deactivate depending on whether you want to have a pivot or a recess.