Many Pokemon are tied, so they will all be listed. Many of these Pokemon were actually introduced in Gen 5 and 4, so they fit your requirements well.
- Chandelure (Base 145)
- Darmanitan-Zen Mode (Base 140)
- Alakazam, Porygon-Z and Volcarona (Base 135)
- Gengar, Espeon, Glaceon and Magnezone (Base 130)
- Exeggutor, Duosion, Reuniclus, Gardevoir, Roserade, Magmortar, Beheeyem and Hydreigon (Base 125)