I've just finished the main story of Shield with a new team:
Zidane - level 62 Cinderace with Low Kick, Pyro Ball, Blaze Kick and Headbutt
Morgawr - level 61 Gyarados with Earthquake, Aqua Tail, Dragon Dance and Waterfall
Celestia - level 62 Galarian Rapidash with Psycho Cut, Dazzling Gleam, Misty Terrain and Megahorn
Happy Appy - level 64 Appletun with Energy Ball, Leech Seed, Apple Acid and Dragon Pulse
Ivy - level 61 Boltund with Thunderbolt, Wild Charge, Crunch and Play Rough
Ironhide - level 60 Copperajah with Heavy Slam, High Horsepower, Iron Head and Play Rough
and a seventh swap-in team member, Tyson - level 63 Hitmonchan with Drain Punch, Brick Break, Close Combat and Ice Punch
Overall not a bad team, there's nothing close to what I would consider a weak link in there. Many of them, Zidane and Happy Appy in particular, do badly in Max Raid battles, but the whole team did well against the various Gym Leaders and rivals. Not as good as my Sword team, but I'd say this playthrough was a success, and the "Magnificent Seven" strategy I've been using in Gen 8 is one that works. I still need to do the Swordward and Shielbert storyline, catch Zamazenta, and then catch any remaining Shield exclusive Pokemon to register them in Pokemon Home's National Dex. Once I've done that, I plan on transferring my Shield team and Zamazenta to Sword when the expansion pass comes out. Right now I'm in two minds about buying the DLC for both Sword and Shield, I was just going to get the Sword expansion pass, but there's bound to be at least some version exclusive Pokemon I'll want to have in the Shield expansion pass too.