Thanks guys that’s really good information. Upon quick inspection this morning it looks like I have a variety. At least one Cornelius, two Super Champion (is that the same as Super Challenger?), and one which I couldn’t find a manufacturer on initial inspection. I’ll need to play look them over in more detail tonight.
After digging through some stickers I see that I actually have three cornelius kegs and one mystery keg. The mystery keg is Italian made and that’s about all I was able to uncover. I guess I’ll proceed under the assumption its a corny as well and see if everything fits together.