I have 62 of the 69 officially released games and over the years I found that for me, these games are best played with analog control.
Blue Print, Centipede (best with CX22 Trak-Ball), Choplifter!, Defender (also plays well the Sega Sports Pad in Sports mode), Dreadnaught Factor, Galaxian, Gorf, Gremlins, Gyruss (best with CX22 Trak-Ball), Kaboom! (best with trimmer/paddle control), Missle Command (best with CX22 Trak-Ball), Pole Position, RealSports Baseball, RealSports Football, RealSports Soccer, Rescue on Fractalus!, Robotron 2084, Space Dungeon, Space Invaders, Star Raiders, Star Wars: The Arcade Game, Star Wars: Return of the Jedi Death Star Battle, Super Breakout (best with trimmer/paddle control), Tempest (best with CX22 Trak-Ball)