Hi,
I’d say these are all P.squamosus. It often starts off looking similar to your first two shots, with what look like small compact caps on long (in comparison) stems. – Then the caps begin to expand and you get the normal P.squamosus sort of shape.
The only other species it might be is P.tuberaster, but to me, it doesn’t look quite right for that one.
Overall size would be a good macro characteristic for comparison, if you are able to revisit after several days – P.squamosus gets quite a bit bigger than P.tuberaster.
Regards,
Mike.