Have a story I'm trying to develop, two issues I'd love advice on

I've got an idea for a pulp series about a monster hunter who works as an indie pro-wrestler. I'm a big fan of both genre fiction and pro-wrestling so the concept for the story is very much in my wheelhouse.

I've got two main issues I'm running into is I'd like some advice from people outside of pro-wrestling who understand storytelling and writing. I've written a few novelas but nothing published. I'd like for this to be my first full-length novel.

My first issue is the world of pro-wrestling features a lot of very unique jargon that has to be explained to non-fans. It also has to be used to some extent or fans will think it's written by someone who doesn't really respect the business. A somewhat recent TV show, Heels, had an issue of sounding like someone opening Wikipedia and reading definitions in exposition. I've had some friends who are fans suggest a glossary but I always feel as if that's a crutch. I'd love for opinions from writers though, I'm not adverse to working better exposition into my writing than I've seen done elsewhere.

My other issue is how to present the real world of pro-wrestling around my fictional world. I understand that obviously for legal issues alone I can't use terms like WWE/WWF or other major company names, nor names of real wrestlers. My main issue here is I'm unsure if I should create obvious stand-ins for real life companies, or even just make vague allusions to them? For instance in wrestling despite being headquartered in Connecticut WWE is referred to frequently as New York because that was the main territory they operated out of in the past. So I'm unsure if I should refer to New York, a WEW, or just instead make up entirely new groups like someone operating out of St. Louis (for instance). For wrestlers themselves I have no intention of using any kind of stand-in or representation of real people, at most I might have some anecdotes about real wrestlers that I change up for characterization and to work in some of the outrageous nature of the business.

For anyone who is concerned, I just want to say up front that my fight scenes do not feature him suplexing vampires or hitting shooting star presses on werewolves. My concept for the character is someone who knows how to fight for real with training, but who also knows the world of wrestling. His mom was a wrestler, his dad was an early BJJ MMA fighter, he learned from both of them growing up. I've had a few people ask me that when I outline the basic concept, and I understand how terrible it would be.