28 802 760 million/s + 5 Bonus Secrets - Plants vs Brainrots

This base makes 12.3 m/s (with 6x - REBIRTH 10) with: 

(Base info needs update, if you buy you may get something else)

9x Big Frank (Pumpkin)

3x Pumpikino Elefanto III (Pumpkin)

1x Frankuccino Assassino III (Pumpkin)

1x Pumpkinino Reaperina III (Pumpkin/Headless)

2x 67 (Limited) 

1x Los Mr Carrotitos (Rainbow)

The 5 Bonus Secret Brainrots:

Pepito Di Pollo II (Neon) - 63.7 k/s

Bangello (Rainbow)  - 78.7 k/s

Controllazzo II (UnderWorld) - 76.7 k/s

El Tacorito II (Rainbow) - 65.5 k/s

Pepito Di Pollo (Ruby) - 77.1 k/s