I might as well post a discography of what each band member has contributed to. Where possible/known, this list only includes significant contributions, not like a lead guitar on one song or things like that, and no mention of compilations either, except for live albums. The name of the band the member was part of is included in "[ ]" after the album title
Where I was unable to confirm the name of the specific album the member featured on or the extent of their contribution, then I didn't include it.
I had this list prepared for a GNR website I was working on but aborted since there are already two or three major, extensive GNR fan websites out there and it would have been pointless to try.
BUMBLEFOOT"The Adventures of Bumblefoot" (1995) [Released as RON THAL]
"Hermit" (1997) [Released as RON THAL]
"Hands" (1998)
"Uncool" (2000) [Released in France] / (2002) [Released in U.S.A]
"9/11" (2001)
"Forgotten Anthology" (2003) [Compilation]
"Normal" (2005)
ROBIN FINCK"Closer to God" (1994) [NINE INCH NAILS] {Remixes}
"Further Down The Spiral" (1995) [NINE INCH NAILS] {Remixes}
"Ghosts of Mars" (2001) <Film Soundtrack> {Guitarist on 4 songs}
"And All That Could Have Been" (2002) [NINE INCH NAILS] {Live Album}
TOMMY STINSON"Sorry Ma, Forgot to Take Out the Trash" (1981) [THE REPLACEMENTS]
"Hootenanny" (1983) [THE REPLACEMENTS]
"Let It Be" (1984) [THE REPLACEMENTS]
"Tim" (1985) [THE REPLACEMENTS]
"The Shit Hits the Fans" (1985) [THE REPLACEMENTS] {Live Album}
"Pleased to Meet Me" (1987) [THE REPLACEMENTS]
"Don't Tell a Soul" (1989) [THE REPLACEMENTS]
"All Shook Down" (1990) [THE REPLACEMENTS]
"Friday Night is Killing Me" (1993) [BASH & POP]
"When Squirrels Play Chicken"(1996) [PERFECT]
"Village Gorilla Head" (2004)
RICHARD FORTUShttp://www.4tus.com/Go to his website and click "RELEASES".
Richard is a popular session player so you can imagine the number of albums he has contributed to in some way.
DIZZY REED"Use Your Illusion I" (1991) [GNR]
"Use Your Illusion II" (1991) [GNR]
"The Spaghetti Incident?" (1993) [GNR]
"Pawnshop Guitars" (1994) [GILBY CLARKE]
"It's Five O'Clock Somewhere" (1995) [SLASH'S SNAKEPIT]
"Copper Wires" (1997) [LARRY NORMAN]
"Live Era: '87-'93" (1999) [GNR]
"Village Gorilla Head" (2004) [TOMMY STINSON]
"Strangeland" (2006) [COURT JESTER]
CHRIS PITTMAN"Replicants" (1996) [REPLICANTS]
"Bourgeois Kitten" (1996) [BLINKER THE STAR]
"Creative Playthings" (2004) [ELECTRIC COMPANY]
"SexTapesTM" {Album Title Unconfirmed} (2007) [SEXTAPESTM]
*(Pittman also played on the TOOL album "Aenema". I suggest if you are really interested in his musical background, look him up in WIKIPEDIA because there is some interesting information there but incomplete)
FRANK FERRER"The Beautiful" (1990) [THE BEAUTIFUL]
"Storybook" (1992) [THE BEAUTIFUL]
"Love Spit Love" (1994) [LOVE SPIT LOVE]
"Trysome Eatone" (1997) [LOVE SPIT LOVE]
"Whatcha Gonna Do Honky?" (1999) [HONKY TOAST]
"Libertad Del Alma" (2001) [ROBI "DRACO" ROSA]
"Hitting The Ground" (2001) [GORDON GANO]
"Mad Love" (2004) [ROBI "DRACO" ROSA]
"Naked Self" (2000) [THE THE]
I am sure there is things I have missed worthy of inclusion.. Please let me know