Solved Who is managing my interfaces?

[banderas20]

Netplan would be added complexity to me, and not as powerful and NetworkManager.

the config files in NetworkManager don't show everything.

nmcli con show ( connection ) will display everything about that connection.
Much more than netplan does.

Indeed it displays everything. The hard part (at least for me) is getting used to nmcli commands to set the parameters of each interface.