A good team could be Pikachu for its popularity and electric type moves which are useful in many situations. Charizard as it's a powerful fire type. And Bulbasaur which can cover different types with its grass and poison attacks. These three are classic and can handle a lot in the story.
A good team could be Sprigatito, Fuecoco, Pawmi, Rookidee, Nacli, and Hoppip. Sprigatito has some useful grass - type moves early on. Fuecoco is a solid fire - type. Pawmi is an electric - type with decent power. Rookidee is a fast flying - type which can be very helpful in battles. Nacli is a rock - type that can take hits well. Hoppip is a grass - and flying - type that can be useful in different situations.
Well, in my opinion, a solid team for the Pokemon Shield story would be the following. Firstly, have a Zamazenta. It's a powerful Legendary Pokemon with great stats. Then, add a Centiskorch. It's a Fire - type with high attack power. Next, include a Grimmsnarl. It has good special attack and can be quite a tank. Also, consider a Duraludon. It's a Steel - type which is great for defense against many types. Finally, have a Mr. Rime for its ice - type moves and its unique look. This combination gives you a good mix of offense, defense, and different types to handle various situations in the story.
Well, when it comes to a good team for the story in Pokemon Sword, you can't go wrong with Zacian, the legendary of the game. Along with Zacian, having a team of Scorbunny (evolved into Cinderace) for its speed and firepower, Snorlax for its bulk and power, Lucario for its fighting and steel typing which is great against many opponents, Gardevoir for psychic support, and Flygon for its ground and flying type combination which helps in traversing different terrains and battles.
For the story mode in Pokemon Sword and Shield, Sobble, Grookey and Scorbunny are great starters. Sobble can turn into a powerful water - type, Grookey into a strong grass - type and Scorbunny into a fire - type. They can cover a wide range of types as they evolve.
Well, for the story in Pokemon Sun, I'd recommend starting with the starter Pokemon that suits your playstyle, be it Rowlet for its grass - flying type which is useful against many early opponents. Then add a water type like Mudkip (if obtainable) for its versatility. Also, having a normal type like Eevee can be great as it can evolve into different useful forms later. And don't forget about a flying type like Pidgey which can help with scouting and quick getaways. Another good addition could be a psychic type like Abra for its strong special attacks later on.
A good team could be Zacian, Rillaboom, Inteleon, Corviknight, Dragapult, and Toxtricity. Zacian is a very strong Legendary Pokemon. Rillaboom is a great Grass - type with powerful attacks. Inteleon is a reliable Water - type. Corviknight can provide good flying support. Dragapult is a fast and strong Dragon - type. Toxtricity can deal with different types of opponents with its dual - type nature.
For the Pokemon Sword story, the best team depends on different factors. However, a solid team could be formed with the likes of Sirfetch'd. It has a cool design and can be quite strong in battles. Add to it the power of Boltund, a fast Electric - type. Then there's Flapple, a Grass - / Dragon - type with some interesting moves. Coalossal can bring in the heat as a Fire - type powerhouse. And don't forget about Mr. Rime, a Psychic - / Ice - type that can surprise opponents with its moveset.
A good team could be Sprigatito, Fuecoco, and Quaxly as your starters. Sprigatito can be useful for its speed and special attacks. Fuecoco has strong fire - based moves. Quaxly is great for its water moves which are effective against many opponents in the early - mid story.
A good team could be Decidueye, Lycanroc, Mimikyu, Salazzle, Vikavolt and Alolan Raichu. Decidueye is a strong starter. Lycanroc is fast and has good attack. Mimikyu is tricky with its disguise ability. Salazzle has high special attack. Vikavolt is powerful and Alolan Raichu is cute but also has decent stats.