Bug: Volcarona- 550
Dark: Hydregion, Tyranitar- 600
Dragon: Dragapult, Hydregion, Kommo-o, Goodra- 600
Electric: Magnezone- 535
Fairy: Togekiss- 545
Fighting: Kommo-o- 600
Fire: Arcanine- 555
Flying: Togekiss- 545
Ghost: Dragapult- 600
Grass: Tangrowth- 535
Ground: Rhyperior- 535
Ice: Vanilluxe, Lapras- 535
Normal: Snorlax, Blissey- 540
Poison- Venusaur- 525
Psychic: Exeggutor- 530
Rock: Tyranitar- 600
Steel Duraludon, Magnezone- 535
Water: Gyarados, Milotic, Kingdra- 540 (Wishiwashi-School Form has a BST of 620, not sure if it counts)
I've italicized the Pokemon that show up more than once since you're looking to build a team out of these, so it might be helpful to know what Pokemon are "Best" among multiple types.
I hope this helps!
Source: Pokemon Showdown Teambuilder