Well, today I intentionally ate moldy cheese. It was gouda and the mold was a grayish green tone and not very fuzzy.
Besides the taste I haven't had any negative effects so far. I melted it on a pan to at least "cook" it a little. But I could tell there were big chunks of mold due to the particular dirt flavour.
You probably shouldn't eat that kind of moldy cheese. It's hard to say what type of fungus you just ate. It isn't the same as what is done intentionally.
Gouda, first of all, is not a type of cheese that should be moldy.
Also, cheeses that are made to be moldy, don't just become moldy on their own. The mold is added in the production process, and is a type of mold that usually wouldn't have appeared on the cheese anyhow.