Understanding open ports on truenas

I am on TrueNAS-13.0-U6.1

I was looking at this doc ( Default Ports | TrueNAS Documentation Hub ) listing the inbound / out bound ports.

then i ran nmap and found some that are not listed in the doc and am hoping someone can tell me what they are.

5357/tcp open http BaseHTTPServer 0.6 (Python 3.9.16)
6000/tcp open X11?
anyone know what these are for? they are not listed in the above doc, should they be?

thanks for your time,