So what exists that we haven't heard at all? Using https://en.wikipedia.org/wiki/List_of_songs_recorded_by_Guns_N'_Roses#Unreleased_songs and personal knowledge, here's the list of songs we've never heard.
-The 17 minute version of November Rain that allegedly exists
-studio It Tastes Good, Don't It (from both the AfD and UYI sessions)
-A Beer and a Cigarette (Hanoi rocks cover from the UYI sessions)
-Down on the Street (The Stooges cover from the UYI sessions)
-Just Another Sunday, Too Much Too Fast, & Bring it Down Home from the UYI sessions
-The Nu-Guns versions of The General & Monsters
-The CD-era versions of the Locker Leak songs (I'm sure Ron & Frank contributed something to those over the years)
-Ides of March
-Seven
-Anything potentially with DJ Ashba on it (he apparently worked a lot with Axl individually)
- All I Ever Wanted, Dragon & We Were Lying (which might not be real but have been mentioned)
Am I missing anything?