In terms of 45s, I try to collect and punk/post punk/new wave records I can find, and I also try to look for rockabilly, blues, soul, funk, doo wop, and more.
In terms of artists, I’m trying to look for every 60s Rolling Stones records, including the picture sleeves (although the Street Fighting Man sleeve will probably stay out of my collection, as its over $20,000 and I prefer keeping all of my limbs).