Tbh, some of the player in this thread I wouldn't class as a holding midfielders.
The likes of Carrick, Alonso, Xavi etc are deep lying midfielders, which is obviously classed as a playmaker, and do get forward to influence the play occasionally/regularly (Carrick is starting to do that more which I like.)
As for Essien, I wouldn't class him as a holding midfielder either. I would class him as a box-to-box midfielder. He does occasionally play as a holding midfielder for Chelsea (when he's fit obviously

) but I think he's wasted there. He play's best in a more central midfield role, where he can get back and help with the defensive work, and then drive forward into the box. He doesn't score that often, but he has quite a few vital goals for Chelsea.
If we are counting Essien as a holding midfielder, he'd be my choice. I'm a massive, massive Essien fan and I actually regret the fact that we didn't manage/didn't put up more of a fight to get him. He'd be perfect in our midfield imo. He's absolutely world class.
However, I don't count him as one. Makelele would be my choice if he was younger and in his prime, but my choice's atm would be Senna or Cambiasso.