I have the mopar steel bumper. Used the warn OE winch plate and warn evo vr12s, no issues during install on any of the parts fitting together besides needing longer fairlead bolts.
I just got my warn 10s installed along with the warn mount plat. It certainly wasn’t a walk in the park but everything mostly fit. Hardest part was the inner bolts and it took a long time to get those tightened which took several articulating heads/sockets/extensions. The other part was getting the skid plate back on. It took a bit of moving around until I got it to fit. I have heard of people notching the rear holes which I almost had to do... but I eventually got it on along with snapping off one of those bolts due to using an impact wrench a bit too long. I had to get the bolt removed and rethreaded the hole. But that was due to my stupidity.
The warn setup should mostly work for you if you take your time. Watching multiple YouTube videos helped as they all had different tips. Also read the directions carefully. Some of the YouTube videos gloss over key installation topics like being sure the bolts go through the mounting plate and bumper to mount the fairlead. There were a few videos that showed mounting the fair lead just on the bumper, skipping the mounting plate. This is why I think some people have difficulty mounting the skid plate back on because those bolt heads push the bumper forward. The instructions clearly show the bolt going through the mounting plate which made everything fit near perfectly. That’s just a tip I wanted to share.
I appreciate the info. It's just so very strange to me that after all the Wranglers running around, installing a winch/plate should not be ANYTHING other than plug and play.