For the story in Pokemon X, you might want to consider the following team. First, choose Greninja as your starter evolution. It has great speed and powerful water moves. Next, add Gliscor. It's a very reliable ground/flying type. Then there's Haxorus. With its high attack stat, it can deal a lot of damage. Altaria is also a good choice. It's a dragon/fairy type which is useful in many situations. And don't forget about Aegislash. Its unique typing and abilities make it a valuable member of the team. Finally, add Umbreon for its dark type moves and its ability to tank some hits.
Well, in Pokemon X for the story, I'd say start with Chesnaught as it's a solid grass type. Then add Lapras which is very useful with its water/ice typing. Charizard is also a great addition for its power. Sylveon can be a good support with its fairy type moves. Garchomp is a strong attacker with its dragon/ground typing. And finally, Ampharos which has some great electric moves to help out.
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.
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.
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.
A good team could be Sprigatito, Fuecoco, Pawmi, Tarountula, Nacli, and Smoliv. Sprigatito has cute and useful moves early on. Fuecoco is a solid Fire - type. Pawmi is an Electric - type with some nice attacking moves. Tarountula can be great for its Bug - type attacks. Nacli is a sturdy Rock - type, and Smoliv has potential as a Grass - type.
A great team could include Cinderace, Inteleon, and Rillaboom. Cinderace is a strong Fire - type with high speed and attack. Inteleon is a sharp - shooting Water - type sniper. Rillaboom can dish out good Grass - type damage and has some useful abilities.
A great team could be Greninja, Charizard, Sylveon, Lucario, Tyranitar, and Hawlucha. Greninja is fast and strong. Charizard has high attack power. Sylveon can be a good support. Lucario is a great all - rounder. Tyranitar is bulky and powerful. Hawlucha is quite agile in battles.
A great team could include Cinderace. It's a very strong Fire - type with high speed and attack. Zacian is also essential. Its signature move is extremely powerful. And Corviknight for its good defense and flying type moves which gives you an advantage in certain battles.
Well, in my opinion, a top team for Pokemon Sun story would be Greninja, because of its high speed and strong water - type moves. Then there's Alolan Raichu which is a unique Electric - type. Salamence for its flying and dragon - type power. Garchomp too is a great addition with its high attack. And Gardevoir for its psychic - type abilities. These Pokemon together can cover a wide range of types and battle scenarios.