I think Melnichuk is in a nice spot. Nobody in SJ right now is a good long term answer in net, so he & Korenar can play in the AHL, and see who comes out on top.
I think I'd have Gilles a bit behind Melnichuk, due to thinking he's a NHL backup caliber guy. He might make the NHL to stay next year, or not make it again.
Wolf isn't a high draft pick, but has played well in junior. Who knows how he'll translate.
Zagidulin is last for me. He's behind Gilles in the pecking order, based on AHL results. His Elite Prospects page has him rumored to be heading back to the KHL. If he stays, and Calgary lets him compete for the NHL backup job, then he'd move up the list. He needs to be the best AHL goalie on his team for me to get excited, and right now, it looks like he may be one and done in North America. If he stays, you can bump him ahead of Wolf.
https://www.eliteprospects.com/playe...tyom-zagidulin