We just bought these. I was looking for good clearance, too. I just looked at the bunks and bought a higher distance between top and bottom. Wayfair tells you that measurement on each one. It is a nice distance.
https://www.wayfair.com/baby-kids/pd...?piid=31883246
If you want something cheaper, this one even has more space between the bunks
https://www.wayfair.com/baby-kids/pd...iid=1493706073
We were getting gray, though, and dd didn’t like the color of this one so we got the first one. We got it on sale, though. We got the loft bed of the lower one for dd1, though, and I like it a lot!