I have both, levelled Jott as soon as I got him, Frank is in a short queue so I can’t comment on him yet. However I don’t think there’s a right or wrong answer between those two - just what suits your needs. While you’re working on them in whichever order, hopefully more scopes will be piling up!
The thread is Thorne v Richard, but @Drubas you also have Raf. If your five star healers are a bit lean, he is actually quite good, and definitely better than those other two useless palookas in my opinion