there has been a fair amount of research into this subject, and there are consistant hirachies amongst ant species that live in close proximity, i'll try and dig out the paper i was reading a few months ago...there is also some info in The Ants
Temnothorax nylanderi will live with most species fairly happily, but they are very weak ants, so make sure they have sumwhere to hide, I've seen these ants in the wild tho, living near Myrimca and Lasius, and they never seem to get attacked, infact when they are discovered they flatten themselves on the ground, and are investigated a bit by the other species, before being left alone....bear in mind however, that in the wild they have allot more space, so less competition for resources, also you will need to make sure that the nest is inaccesable to the other species, so the nest cannot be attacked, so a larger species may be better, eg Formica or Camponotus, then u can put a metal grill over the nest that only the Temnothorax can get thru
