Bottle warmers

So I think I’ve decided to exclusively pump. I think it’s best for both of us as she just gets so frustrated trying to nurse and I honestly dread when I have to feed her because it’s so frustrating. However whenever we feed her bottles, we’ve been putting them in a big cup and run hot water on it for a few minutes to warm it up. Which if we’re gonna be doing bottles exclusively, we need a different way cuz that’s A LOT of water. So what are some recommendations for bottle warmers that will fit a variety of bottles? We have a dr Browns, avent naturals, nuk simply natural, mam anti colic, etc so all different shapes and sizes.