99 can be played in 4 players here (in 2 not yet), but is not recommended by the developer. I haven't tried it in 4 yet, it's just been launched a couple of weeks ago (the 4-player option).
From what you listed there I only play(ed) Oh Hell!, I must say 99 is way better. Unfortunately very few people play 99, so it's quite hard to get to play.
I want to try Wizard, added it to my favorite games yesterday, to test it in alpha.
Other bidding card games on bga:
They're ok, but I prefer 99 to those as well, I feel luck is a bit less involved in this one, though you'll get once in a while a 2 diamond and small cards on the other colours hand (almost impossible hand) or a perfect hand to reveal.
There's also Bids, a bit different, at first i thought it's just a silly game, but there's lot of strategy involved there, but you can get a very bad hand and get the game ruined in only one round (still played only a couple of games, can't rate it properly atm)