That did the trick for those nodes that wouldn't connect to the gluster, thank you!
For the issue with the Gluster Node itself booting to emergency mode, it did not make a
difference.
The error in emergency mode says
dependency failed for /gluster_bricks/data
Subject: Unit gluster_bricks-data.mount has failed
Dependency failed for hosted storage as well
This is my Node 3 of the Gluster, Arbiter.