I just replaced my bathroom and kitchen faucets with inexpensive Peerless brand single handle faucets. They fit perfectly. I simply measured the width of the actual faucet, not the holes, and hoped for the best (which is what I got!!).
What an upgrade! I was soooo tired of the squeaky, ugly, plastic ones.
I learned the hard way that I also had to replace the hose between the pex piping and faucet because the washers were permanently compressed. I was unable to find the right washers at the local hardware store and didn't want to drive to a big box store.
2015 Ram 1500
2022 Grand Design Imagine XLS 22RBE