I set up my bitcoin node to run over tor with the following in the config file
# Core
conf=<some_path>/.bitcoin/bitcoin.conf
server=1
daemon=1
prune=23552
maxconnections=1000

# TOR
proxy=127.0.0.1:9050
listenonion=1
listen=1
onlynet=onion

#RPC
rpcuser=username
rpcpassword=password

Question 1 :
I see some inbound connections that have IPv4 addresses. These IPv4 addresses do not show up on bitnodes, so I am a bit curious as to what these addresses are.

Question 2:
Is my node running both on IP and TOR?

Question 3:
If I understand correctly when running a node on TOR, DNS seeders are not utilized and it defaults to the harcoded list of .onion addresses. My first outbound peer was not in the list of addresses in the file. Where could this have come from?

Question 4:
I have what is the difference between onion and not_publicly_routable  in the network fields ?