I typically wear XW/4E in NB/Rockport/Dunham. I know the pain of steel toes not made for wider feet. :)
If you must have steel toes, then I feel for you.
Maybe look for a bootbarn.com near you. There are a lot of them around US.
Thorogood does make Redback knockoffs (and probably others) with comp toes in XW, but those are not likely going to last more than a year or two. https://thorogoodusa.com/thoro-flex-6-black-safety-toe-804-6134/
You could also try places like wideshoes.com or healthyfeetstore.com for wide work shoes/boots, but those are again probably not going to last more than a year or two.
If you don’t need comp/steel toe, you could possibly try https://jimgreenfootwear.com/store/rambler-vellie-black , but you may need an 8$ walmart airplus ultra work insole to add. Those are very comfortable for me, even though they are not really in the XW range. I also have a pair of their rangers built on same last, but with true leather cap toe… the stitching/stiffness on the cap toe bothered me until broken in and moleskin patches added inside on the hotspots. They do also seem to have a steel toe boot on thar same last, but I expect it would be bothersome as it isn’t truly XW.