It's not just you. There's a community on reddit called "mechanicalheadpens" centered around the overlapping interests in mechanical keyboards, audiophile headphones, and fountain pens. Hence "mechanicalheadpens".
I have no name for them but there is a particular type of person that can see the ‘X’ factor in Illmatic, a Subaru boxer engine, an M4 assault rifle, a well-modded pair of headphones, a Rembrandt and a clever joke, despite not being into hip-hop, preferring electric cars, being pro gun control, mostly listening music in their car, preferring modern art, and never really being much for jokes.