Depends on what you consider a hobby.
That being said, I'm very good with knives, short staffs (hanbo and canes), and passable with Japanese swords. Hard to guesstimate exactly how good, since there's limits to how you can test such things. Same with jujutsu and kempo, the two "styles" I trained the most in. But, I've used those skills off the mat, in situations where failures would have meant being dead, so I call that pretty fucking good.
I consider knife sharpening a hobby, but I sometimes get paid for it, and used to do it as a side gig business. Since I had plenty of repeat customers, I don't suck at it. But I'm fucking great at it, imo. I say it that way because most people can't really tell when it's done well or not as long as it cuts better than when they gave it to you. You have to suck to not get a few repeat customers.
I used to be an okay painter, but I quit. Same with photography. Kinda ran out of room for each of them at different times, and never wanted to replace the gear. Sold a few paintings, had some pics published in a magazine, but nothing crazy. And I know I'm at the low end of skill on both. Good enough to impress people that don't do it themselves lol. But I've messed around with both since then with other people's gear, and I can still get it done, though not as well as in the past.
Legit though, I've had a ton of hobbies over the decades. Like, I've made stone and glass knives, refinished furniture, done wood carving, sewing of various types, knitting and crochet, etc, etc. If it was something I could do with my hands, and had an inexpensive entry point for me, I tended to try things. I'd stick with them as long as it didn't get expensive, or until a new thing to learn hit my radar.
Hell, considering how poorly my published works have done I might as well consider writing a hobby lol. Five books that weren't commissioned, and maybe a hundred sales between them. Mind you, I made bank doing custom erotica and research reports (not for students, freelance for people that didn't have the time) though. But I figure once you're published it isn't a hobby, and the same once you make enough that you could take a year between jobs if you wanted to.