Wireless stats in gui vs collected

Hi all!
I have a question for you:
In LEDE, you can see in the Status / Realtime graphs some pretty cool information about wifi signal, bandwidth, connection, traffic, etc. I wanted to have the same info into prometheus/grafana.
I have started to use collectd and manage to have some cool graphs but I don't understand how the stats given in the web gui are take and if there is a way to forward those to prometheus instead of using collectd to do that.

Any ideas?

Can this software use SNMP?