well lets see. excluding multicarts with only dumped games on them:
GB:
Chaoji Gedou 2001 alpha (Super Fighter 2001)
Nuwang Gedou 2000 (Gals Fighters)
Shaoling Legend: hero, the saver
Pokemon Sapphire
12 in 1 V.Fame multi with Xin Feng Shen Bang, Devil Land, Digimon Pocket, Story of Lasama and undumped alternate versions of dumped games, info
here45 in 1 multi with three English Yong Yong Digimon games - one is completely undumped, one is dumped in Chinese, the other is dumped in Chinese with different levels (or just a different level order)
19 in 1 with "Super Mario World 7" Adventure Island hack.
Pokemon Jade (at least I don't think it's dumped - the version counterpart to the Pokemon Diamond Telefang hack)
Final Fantaxy IX
(& a couple of title screen hacks: King of Fighter 2000, a hack of Super Fighter 99, and Gunstar Super Heroes 2, a hack of Sgt Rock: On the Front Line)
GBA:
Digimon Rury
videos of most of the above are on my
youtube channel.
i do have a GB Transferer 2 but its proved incapable of dumping any of these properly (that or emulators don't emulate them), probably because theyre copy protected or have a weird mapper or something. ): i do want to get them all dumped but i havent been able to find anyone who could do it.
apart from that I have a ton of weird famiclones and 16-bit consoles with various hacks and original games built into them, but I dunno if anyone else cares about those
i can list them if you want though.