Okay here are all shumps that have been released in only the arcade and the Sega Saturn for anyone interested. Anything with a downloadable release or a port is not included.
Note: I am not including DOWNLOAD re-releases in japan.
1. Battle Garegga
2. Blast Wind
3. Batsugun
4. Hyper Duel
5. Cotton 2
6. Cotton Boomerang
8. Guardian Force
9. Skull Fang
10. Terra Cresta 3D
11. Dezaemon 2
12. Kyukyoku Tiger II Plus
Honorable mentions: Steam Hearts (also on PCE) - Rare Hentai Shooter
Sellar Assault SS - Starfox type shooter (also on 32x)
Kingdom Grand Prix - (released on the X 68000)