The tiny (2mm) Kyidris of the first few absolutely excellent photos are currently considered members of the large genus Pyramica.
Antdude, this is a good time to remind that ants are derived evolutionarily from wasps, and that the males particularly show signs of this genetic heritage, hence the resemblance you mentioned. In the pseudomyrmicine subfamily, the waspiness is enhanced by their slender build and large eyes, even in the wingless workers.

