Hello @Iterimaa! I think that collaborating on comparative write-up and/or some correspondance tables could be a good idea! I have some personal notes in that regard from my previous readings of some linguistic grammars focused on Mandinka.
I’m going to try to make a separate topics with “wiki” posts within them that we can start to fill out and edit collaboratively 
Bear with me since I need to make the posts and links, etc.
Here are some of them: