This post goes around every few months or so but I have found I stick to a pair of beach moccasin type Nike shoes. Very flat, pretty deep tread for traction. I find that I opt for them over my higher end Nike cross trainers when I am doing ME squats or basically anything OH... helps me use & "feel" my feet all the way up into my legs moreso getting into the lift.
Got them from a Kissimee, FL Nike outlet years ago and was going to rock them at the beach but instead I squat in them
Everyone else on this board seems to use Chucks or wrestling shoes so I guess flat soled shoes would seem to be the way to go.
Try to avoid the overly cushioned shoes and get your feet to do some work