Edits: GL Volkner is still tutoring Brodaha (now tutoring 2 users), willdbeast is still tutoring Hassin627, replacing Sylveon.'s tutee with anaconja. In The Hills is not tutoring BoopToOblivion in Camomons. Will have a replacement soon (likely morogrim or Chessking345)
Last but not least the OP was edited to add in current tutoring sessions.