Should this worry me.

I think I was overwatering late into cycle and my plants developed these black spots that look suspiciously like black mold in the leaves. It does not seem to be making it to the buds themselves should I be worried?

It's unlikely over-watering (the growing medium) has anything to do with your current symptoms.

It is bad practice to saturate the leaves as they appear to be in the pics.

I'd be worried.

One of the issues, the white patches on the leaves looks like powdery mildew. I don't know what the black dots are.

I don’t know if that’s black mold or from bugs, but I would be worried. I agree it doesn’t look anything like overwatering.

I'd remove those affected leaves. Not sure if it's a mold issue or just old fan leaves being being sucked dry of nutes. I'd be more concerned if it was on the green leaves, but certainly keep an eye on it.

Phytoplankton said:

I'd remove those affected leaves. Not sure if it's a mold issue or just old fan leaves being being sucked dry of nutes. I'd be more concerned if it was on the green leaves, but certainly keep an eye on it.

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Concern is warranted; the black spots are already on the green leaves in the pic.
I'm very curious what they might be; haven't seen anything like in on cannabis before.

Seems it may be a huge infestation of thrips. The black spots could be poop, and there are silvery patches on some leaves. Get a magnifying glass or jeweler's loupe and look really close for little fast moving bugs on the underside of the leaves. Yikes.