I don't know what the "official" trope is called but I love stories where the entire cast of characters operates as a "hive mind"/"brain trust". Best examples: New Girl, Bones, Brooklyn 99, Parks and Recreation, Warehouse 13. Basically, any group of characters that has passed "normal" social conventions and become the endearingly awkward "found family". I love it. I can't get enough.
This also extends to the "friends to lovers" pairing that usually pops up in this dynamic. I love it when FMC is talking about being a mother or some other life dream and the MMC is like "yeah, I will obviously be there to love and embarass your child".
*My preference does NOT, I repeat NOT include problematic shows like: Friends, HIMYM/HIMYF