Follow up to (PB) >>19383607 (You) Ukraine Caucus?
found a list of all the current congressional caucuses: https://cha.house.gov/congressional-member-and-staff-organizations
also listed are all the caucuses of the last ten congresses as well as current and past congressional staff organizations which as far as I can tell are like mutual support groups.
My favorite so far is the Algae Caucus.