This is the one I use
https://www.thimblelady.com/shop/quilting-thimbles/. Their sizing instructions are perfect.
I started out with the plastic one to confirm the size and see how comfortable it actually was. It was perfect! When I wore that out, I upgraded to the stainless steel version. I'm now on my second of those after wearing out the first (hole through a couple of the dimples). They are designed to use the pad of your finger to push vs the tip. It really is a much more comfortable way of sewing.