Y'know I want to answer this question as diligently as I can, but the problem is I would be starting off with 100+ names with descriptions and that still would just be cracking the surface.
You're probably better off just searching through the Cacowards and reading the pinned threads in the Classic Doom threads. Putting in key words into the search like: "history", "MIDI", "mappers", "development", "source ports", "resources", "40 oz", etc.; can also broaden your horizons quickly and give you a feel for what these groups/users are like.