I can still see some tileage in the first tile patch mainly around the edges (big light olive green patch to the left).
BUT, if you use about 3-4 variation tiles, this won't be much of an issue.
Dark set of grass on the right, looks fine to me.
We can't really critique the grass tile itself until we see them in context. Place them in a real mockup with trees, a road, mushrooms, people anything..
That way we can see if there's too much detail, needs to be lighter, etc..