To the question of does God exist, the answer is whether Intelligence created Life

[Paleophyte]

Neither the blade of grass nor the entire grass plant nor the entire meadow is intelligent. You could plant the entire planet with grass and not get any intelligence.

Examples are trivially easy, as Angbroda demonstrated. Grass isn't intelligent. Neither is any plant, fungus, or microbe. Neither are most animals. There, you now have a longish list of non-hypothetical living organisms that show no evidence of intelligence. Your hierarchy is clearly wrong.

Every being has intelligence because it perceives information from its environment, converts it into knowledge, and acts with this knowledge, surviving and reproducing. This does not mean that all have the same level of intelligence, e.g. among mammals, humans have the highest.

Grass has no intelligence. It neither perceives nor understands nor acts.