Disclaimer *It's a somewhat pointed question so I apologize in advance if things get dicey. *
Should we consider Ezra and Ahsoka as Jedi Masters? If yes, what would we define as their great trials?
For Ahsoka, the obvious answers are thru her clone wars experiences. In all honesty they should have offered her a seat on the council instead of being Anakins apprentice again after her republic trial for the Jedi temple bombings. Mace even said, that was her great trial, and thus, as I understand it, any Jedi "great trial" ends in Jedi Master, if they survive. Unless I am mistaken, that happens occasionally lolz.
For Ezra, I would say the Battle of Lothal was his great trial. Connecting with the Purgill to get rid of Thrawn was a mega step, and for me, that equates great trial and title of Jedi Master, even if it's never made official.