Era Reports says that the 21st Centauri may be employed....but for the purposes of the OP, If you want "State Mercs" that haven't died or gone the way of McCarron's in 3145 then the Illician Lancers, Harlock's Warriors, Narhal's Raiders, the 12th Vegans might be a good bet. Of the other units, I'm not sure. They all may *now* be considered long standing Davion merc units.