I use a similar setup with a Panasonic GH5 I already had, but I bought one of those €15 Chinese HDMI capture USB UVC cards [1]. These work surprisingly well, and I've had zero issues using them for ~4 hours back-to-back Zoom meetings on my MBP. They've also received some good reviews on YouTube [2].
For audio, I use my Airpods. Great setup for meetings. Latency is good enough IMO.
For audio, I use my Airpods. Great setup for meetings. Latency is good enough IMO.
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[1]: https://www.amazon.nl/gp/product/B088ZTK56F
[2]: https://www.youtube.com/watch?v=daS5RHVAl2U