Lin Xia is easily the best in that group, but Rolph is a much better 5* Gheist anyway. I would almost say Lucia, both because she's a decent card as well as the amazing new artist....but none of those cards are especially exceptional.
It depends on the deck, and game type. Scotty is most certainly better than Psylo in certain decks, but other times not so much.
In Survivor T2, I'd say Lin Xia, as Lucia is ruled out by Hikiyousan, Tanaereva, Lulabee, Miss Lulabee and Wee Lee.
And never use any Jungo in Survivor T2, unless it's Ongh, Sylth and Greow as a 3 card half deck.