Got to go with the majority here. Just the Star Destroyer six for me... even if IG-88 does have to hide his feet so we don't see he's bolted to the floor to stop him toppling over. Not sure how many bounties he's going to collect in that condition. He couldn't even make it to the corner shop to buy a Bounty, let alone collect one.
And as for all the other characters (Greedo aside) which we are now told are apparently also bounty hunters, that accolade was usually retconned years after the fact by Hasbro (presumably with Lucasfilm approval), along with their new and improved 'space names' (Hammerhead?... Pffft! Not good enough! Bring me my Scrabble bag... Let's call him... M O M A W _ N A D O N! And it's on a triple word score!) to make otherwise potentially dull characters seem much more exciting. And not just Hasbro of course, but also the Decipher Customizable Card Game, the novels, computer games and any other old medium Lucasfilm cared to shove our way... At least that is until Disney coughed up 4 billion and decided the canon was no longer canon, so god knows where we stand now ;-)