Just curious, what exactly happened to the Professional series for credit cards? Do any major card issuers still carry them, and for personal/non-business use? Or are they all currently discontinued? Citi used to have a Professional card as did Diners (and I think perhaps even Cap1 at one time as well), but AFAIK, are no longer taking any new applications for them?
Bumping one of my slightly-older threads, since not sure if anyone else hopefully had anything else new to add to the discussion please? 
Also: I am remembering correctly from some years back ago when Professional credit cards were still being issued, it was technically still possible to obtain them for the purposes of non-business use right; i.e., the former Citi Professional card could still be approved for non-business use when it was still an active card product in Citi's credit card portfolio? I seem to be recalling anecdotes from searching past threads here on the forum and elsewhere, where Professional cards could still be used as personal (non-business) cards, unlike the modern Business credit cards of today?
No one? One last bump...figured it couldn't hurt to at least try bumping the thread a final time, just in case. As an aside note: does anyone still actually have a Professional card that is still open btw, if they wanted to provide any insight or datapoints, on it?
Many thanks for the helpful info and links longtimelurker !