Without too much thought, here's my list (any genre, max one album per artist, studio albums only, and no compilations):
- A Tribe Called Quest - "The Low End Theory"
- Black Sabbath - "Paranoid"
- Blackalicious "A2G" (EP)
- Blaze Bayley - "Silcion Messiah"
- Emerson, Lake & Palmer - "Emerson, Lake & Palmer"
- Fela Kuti - "Expensive Shit"
- Iron Maiden - "Powerslave"
- Jaco Pastorius - "Jaco Pastorius"
- Judas Priest - "Painkiller"
- King Crimson - "Red"
- Led Zeppelin - "Led Zeppelin I"
- Miles Davis - "Bitches Brew"
- Nas - "Illmatic"
- OutKast - "Aquemini"
- Pink Floyd - "Animals"
- Queensryche - "Operation: Mindcrime"
- Rage Against the Machine - "Rage Against the Machine"
- The Roots - "Do You Want More?!!!??!"
- Slayer - "Hell Awaits"
- Stanley Clarke - "School Days"
- The Stooges - "Fun House"
- Weezer - "Weezer"
- The Who - "Quadrophenia"
- Wishbone Ash - "Argus"
- Yes - "Fragile"
By genre - I'd loosely categorize 6 albums as heavy metal, 6 as "mainstream" rock, 5 as hip-hop, 4 as progressive rock, 3 as jazz (two specifically as bass guitar virtuoso jazz), and 1 as "world". I counted RATM's debut as rock, but you could easily categorize it as hip-hop (or even metal - which is why these labels are rough approximations only). I thought I'd have more progressive rock albums but many of the rock or metal albums have obvious prog influences (I'd even argue that a few of the hip-hop albums, albeit indirectly, have a prog influence).
By year - one album from the 1960's, 12 from the 1970's, 3 from the 1980's, 8 from the 1990's, and a single album from the 21st century (released in 2000). I'm not a grumpy old man.