Here are the best ones that can be gotten easily without an event.
12: Wiki berry- Dry 15 Location: Berry Master
27: Cornn – Dry 20, Sweet-10 Location: Amity Square
32: Pamtre – Dry 30, Sweet 10 Location: Amity Square
The Amity Square ones can possibly be found by walking with your Pokémon in the square and talking to them every 200 steps.