The standard way to make connections here is through proving the links between profiles. If I were the profile manager of one of the profiles, I would love to see sources/references to documents to create the links. You could really help them by creating sources profiles and sourced links between those profiles. I have trouble following some of the lines you describe in comments as there are no profiles in between them with written sources/links. That way it is really hard to see the connections in reality.
Wikitree is about making connection, but we all do our part by creating the profiles and discuss the sources and prove the links.
If you need help, I am maybe not explaining it well enough, you could ask for a mentor. Those volunteers are much better than me in explaining. You can also contact your greeter for more information.