Fire Stone:
* Vulpix (Alolan) -> Alolan Ninetales: This beautiful Pokemon packs a punch with high Special Attack and access to powerful Ice-type moves.
* Growlithe -> Arcanine: A classic powerhouse known for its speed and powerful Fire-type attacks.
Water Stone:
* Poliwhirl -> Poliwrath: A strong mixed attacker with high HP and physical/special attack.
* Staryu -> Starmie: A very versatile special attacker with access to various moves and high speed.
* Shellder -> Cloyster: A potent defensive and offensive Pokemon known for its high Special Defense and powerful Ice-type attacks.
Thunder Stone:
* Pikachu -> Raichu: A powerful electric-type attacker with great speed and access to powerful moves.
* Eevee -> Jolteon: Another fast electric-type attacker with very high Special Attack.
Leaf Stone:
* Gloom -> Vileplume: A potent special attacker with powerful Grass-type moves.
* Weepinbell -> Victreebel: A strong physical attacker with a very powerful Poison-type move, "Solar Beam."
Moon Stone:
* Nidorino -> Nidoking: A strong mixed attacker with high HP and both physical and special attack stats.
* Nidorina -> Nidoqueen: A strong mixed attacker with great bulk and both physical and special attack stats.
* Clefairy -> Clefable: A powerful special attacker with excellent stats all around.
Sun Stone:
* Sunkern -> Sunflora: While not incredibly strong overall, Sunflora gets a significant Special Attack boost in sunlight, making it a potential niche pick.
* Gloom -> Bellossom: A powerful special attacker with access to very potent Grass-type moves.
Other notable stones:
* Shiny Stone: Roselia -> Roserade: A powerful special attacker with access to powerful Grass-type moves.
* Dusk Stone: Murkrow -> Honchkrow: A dark-type powerhouse with excellent physical attack and speed.
This is not an exhaustive list, but it highlights some of the most popular and powerful Pokemon that evolve with stones. Ultimately, the "best" Pokemon for you will depend on your personal preferences and team needs.