my take on biden is that he's the +50% favorite, but not an overwhelming favorite. in very round, very approximate numbers i'd put his odds at about 60%.
and without getting into specific %s, order the others as below in most likely to win.
harris, beto, booker, sanders, warren, the rest of the field not named individually, buttigieg.
note that this is not a predicted order of finish. i can envision many, many iterations of the race when warren or sanders finishes second but not many where either wins.