Pregnant Platy?

Hi! I’m new to livebearers and think one (possibly two) of my platys is pregnant. Can anyone tell for sure? My apologies that the pics are not super clear.

That isn't a platy but a golden mountain minnow. Unfortunately I don't know much about these species but in my opinion that is pregnant. Mountain minnows are an egg scattering species so if you want the fry to survive you will need java moss or another dense plant or spawning mops.

Full of eggs, yes. Pregnant, no, as that is not a platy, and not a livebearer. If the tank temperature goes down to about 20-21c, she's apt to unload those eggs, which would be better for her.

Now you're already aware of it that tehse are egglayers instead of livebearers. Did someone tell you they were livebearers? Hopefully not someone from the store? That would be painfull...
The fat ones are females that carry eggs. Well, it's about time that those males will court. So, she can get rid of those eggs.
Nothing to be worried about...