Bloodstained, Half-Genie Hero, and Octopus City Blues were the ones that came to mind. I did back Mighty Number 9 too, but it barely floats around in my head, and that saddens me a bit. If I'm being completely honest, the Shovel Knight DLC packs are the Kickstarted projects I want to play the most.
Of the ones I didn't back, but still want to play are Project Scissors and Ghost Song.