Do you know any thunderbolt hubs like that?

One starter article for how the market works - there are lots more. This one was discussed in HN too:

https://overengineer.dev/blog/2021/04/25/usb-c-hub-madness/

Now, for hubs, I didn't need a full blown thunderbolt one, but my current hub this:

https://www.amazon.com/dp/B0F5PY4F2N?ref=ppx_yo2ov_dt_b_fed_...

which works fine - I looked at some competitors with 2x and 3x the money for the same and sometimes lesser specs.