Here are my newly improved best-rated choice team compositions:
The All-Out Attack Dive by Air Superiority and Weapons of Mass Disruption and Destruction:
Tank: D.Va
Damage: Echo and Pharah
Support: Ana and Mercy
The Super Smash Brawler Dive with High-Impact Spam Damage:
Tank: Doomfist
Damage: Junkrat and Reaper
Support: Baptiste and Moira
The Cybernetically-Enhanced Chaos and Destruction Supercharger:
Tank: Hazard
Damage: Junkrat and Sombra
Support: Lifeweaver and Moira
Adrenaline Rush of Active and Passive Self-Healing Chargers:
Tank: Junker Queen
Damage: Ashe and Sojourn
Support: Brigitte and Kiriko
Incendiary Brawler Containment Specialism:
Tank: Mauga
Damage: Ashe and Torbjorn
Support: Baptiste and Brigitte
The Guardian Protectorate Rapid-Fire Armed Forces:
Tank: Orisa
Damage: Sojourn and Soldier: 76
Support: Illari and Mercy
The Balance of Close and Long-Ranged Focus-Fire Attack Modes:
Tank: Ramattra
Damage: Reaper and Symmetra
Support: Moira and Zenyatta
The Close and Melee-Ranged Backed by Rapid Suppressive Firing Army:
Tank: Reinhardt
Damage: Bastion and Torbjorn
Support: Brigitte and Juno
The Best Spam Damage Offense of Traps and Explosives:
Tank: Roadhog
Damage: Junkrat and Venture
Support: Illari and Lifeweaver
The Experimental High Poke Damage from Close and Long Ranges:
Tank: Sigma
Damage: Symmetra and Widowmaker
Support: Ana and Zenyatta
The Pure Speed and Strength Dive by Elements of Surprise:
Tank: Winston
Damage: Genji and Tracer
Support: Kiriko and Lucio
The Extreme Mobility Close and Long-Ranged All-Out Attack Dive:
Tank: Wrecking Ball
Damage: Cassidy and Hanzo
Support: Illari and Lifeweaver
Mass Slowing and Freezing of Opponents in their Tracks by Beams and Graviton Weapons of Sweet Death:
Tank: Zarya
Damage: Mei and Symmetra
Support: Lifeweaver and Zenyatta