I had been looking for years to find someone willing to custom make grips for Ruger revolvers, and I finally found one. The name is Custom Firearm Products. https://www.customfirearmproducts.com/
They are great to work with, and will make any style of grip you ask. I assume they do other custom work as well. From what I gather, they will do any gun, and most importantly, they will do any Ruger. I had target grips made for my SP101. I knew I had to give up some areas to keep things proportional, and that's where these guys are great. They will make, and re-do any changes you need until you are 100% happy. I drew up what I wanted as best as I could. They did a great job the first time around, nearly mirroring exactly what I asked for. I didn't like a couple things, and they changed them no problems at all. I am happy with the result now. I now have a proper set of grips for an SP101 that I can shoot well with. I assume they have all kinds of different woods, finishes, and I know they will do checkering and more. I told them I wanted an oil finished smooth grips, with a rougher finish. I like this, as it allows your hand to find home, yet isn't like holding a bar of soap like some of the highly polished grips can be when you get a little sweat going. That is a palm swell on the left side, not a defect. I'm wrong handed.