Disc brakes started to replace rim brakes before the three bolt anything type cages were invented, thus most forks were no longer built for rim brakes when the three bolt cage system started to be used.

Not many forks were made in aluminum. Yes some are, but they are rare. A friend of mine had one that cracked, which sent him to the hospital when half of his fork was no longer attached to his frame.

A gal I know used some two way tape and zip ties to attach the three bolt system to her carbon fork. The tape slipped a bit but overall I think she was happy with it. If she was not happy I do not think she would have told me, so maybe not?

Take a look at the bikes used for the Tour Divide race. If you see the fork you like, you might be able to find out who made it. But, it is quite possible that no rim brake bikes were used on that race, so this might not help.
https://bikepacking.com/bikes/2023-t...e-rigs-part-1/
https://bikepacking.com/bikes/rigs-o...divide-part-2/