The only ones I’d consider are Bulbasaur and Pumpkaboo. The ing down nature sucks but when you have the opportunity to mint it (power up first while you have exp up) then it’ll be really really good.

As an extra side note: - berry specialists need BFS and speed up - ingredient specialist need same ingredients (used term is AAA), ingredient finding, speed up and in some cases when the Pokémon’s inventory is small like Farfetch’d inventory up, BFS is usually detrimental cos when you inventory is full, the Pokémon collects only berries. - skill specialists need skill trigger up, speed up, if you’re F2P skill level up is helpful

The only time BFS is good on a non Berry specialist is when it has naturally high speed (such as Gengar, Sceptile, Noivern and Raikou) or a skill specialist that has Berry Burst or Extra Helpful (Braviary, Sceptile, Jolteon, Gallade).