Physical and special attackers
On any pokemon nature chart reading, the first question is which attack stat the species actually uses. A physical attacker with base 130 Attack and base 80 Sp. Atk should run Adamant (+Attack, −Sp. Atk) or Jolly (+Speed, −Sp. Atk), because the dropped stat is one it never touches — the 10% boost costs nothing worth having. Special attackers mirror the logic with Modest and Timid, which drop Attack instead. Dropping the offense a Pokemon never uses is the single most important habit in nature selection, and it is exactly what the finder above checks first.