By this I mean Zangoose and Seviper, Plusle and Minun, Groudon and Kyogre, Seedot and Lotad. These may be region locked. I have personally seen 5 seviper and 0 zangoose, 0 plusle, 0 minun, 0groudon, 0 kyogre. What have you seen?
EDIT: It appears that absol and mawile are appearing in raids only (r.i.p)