One suggestion...
My company has been using Gotomeeting for 5+ years. No video (thankfully), but meetings are generally 20-30 people and largely seamless.
It is expensive: $300 per seat to host a meeting, but it pretty much just works. The UI is annoying and could be simpler.
However, I don't know if it is as shady as Zoom because I don't think anyone has done a deep dive.