My friend who is a plant enthusiast gave me this cutting of their plant but neither of us know what kind of plant it is! Please help me identify it! Thank you! He and I would greatly appreciate it.

It's a Peperomia, but I don't know which.
You might try browsing www.peperomia.net

Hi Julieyu112,

I agree, it looks like a variety of Peperomia but I'm not sure which one. We have quite a few listed in our database, many of them with photos for comparison: https://garden.org/plants/sear...

This Peperomia page has photos of many different types too and you may find a match to yours: https://succulent-plant.com/fa...