These creatures are from the AD&D 2nd Edition reference Greyhawk Appendix.

Crypt Thing (CR 5)

Dragonnel (CR 6)

Monstrous Dragonfly (CR 3)

Needleman (CR 2)

Spriggan (small) (CR 7)

Spriggan (large) (CR 7)

Swordwraith (CR 5)

Vampire Cactus (CR 2)

Voadkyn (CR 3)