Well for one there's the fact that we're really missing some depth like Pérez atm, so this seems a bit of a weird question to ask...
Anyways that's quite a pretty broad net you're casting, hah, the only thing I can really say is consistently in common with all those players is that they are contracted to Arsenal.
Every squad that isn't Real Madrid or Barça, or maybe Bayern, has its fair share of role players. It's not really that "type"--like I said, with such a diverse list I can hardly even begin to say what the word "type" means here (if I had to describe each player I'd say: rather good though occasionally quite frustrating specialist, cunt, should be at Cardiff, young tired but very good, easier to manage Mandzukic, player with a definite role to play in a champions league club)--of players that's holding us back so much as the management.
Way too much focus on transfer policy and squad construction when criticising Wenger, he's made some errors in this department, especially in the last few years, but overall it's one of his better traits and holding us back a lot less than his inability to make the whole better than the sum of its parts.