Tbh paying someone to make assets isn't really the vibe of gamejams, if you make assets you *do* join a team.
Ah I see, its possible the information I've found/been given was outdated or just outright wrong, I was informed that hiring freelancers for a game jam was common practice - but my information sources were not obtained through Game Jam communities themselves.
Are you an experienced Jammer? If so I'd definitely like to ask you a few questions if you have the time, I'm new to the concept of Game Jams both from a voice acting perspective and in general so having someone with first hand experience would be wonderful.
Reddit, google, a few actual people as well, though these were voice acting communities and not jamming communities, so thank you for letting me know. I'll be removing/adjusting posts and making note of everything should there be any other misinformed folk I run into, thank you everyone for the info!