"water on pass side floor..so stop acting like im stupid..."
It could be the heater core, but, as you say, it is only one of several possibilites. So, as you say, one should check the liquid to see what it is.
Coolant will be slippery if you rub it between your finger tips, water condensing off the A/V evaporator and leaking through a cracked housing will not.
If "freon" was leaking into the car, it would not be a liquid, as it turns to gas almost immediately at atmospheric pressure. However, it is possible that a major freon leak could leave an oily residue, since there can be some compressor oil circulating in the system. But this would be a quite small amount and typically only seen as a residue within an inch or so of the leak.