Oh Good God, Lemon.
Moisture (the OP): If you want regular general purpose tennis shoes to wear for riding on flat pedals, go with something that has a reasonably flat and somewhat stiff toe and sole structure, BUT if possible that also has soft “sticky” rubber on the very bottom outsole.
E.g. the Adidas Superstar, some Puma soccer style shoes. Or skate/BMX shoes from companies like Vans, Emerica, Osiris, Etnies, DC.
Stay away from running shoes with too much cushion {EDIT: or too many bumps and whirls}.
You want some thickness, but not so much that you can’t feel the pedal and can’t prevent lateral wiggle. Isn’t that obvious?