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That is all Philodendron monstera. The young leaves will be solid. As the plant matures, all the leaves will look the same. Kinda like this:

Philodendron is a misnomer. It's really called Monstera deliciosa.
Monstera and real philodendrons both belong to a group of plants called Aroids. That's probably why they are confused - they are related.

With-in the plant family Araceae there are many sub-families. One of these sub-families is Aroideae, which includes the philodendrons and another one is Monsteroideae which includes the Monsteras. Then each of these sub-families are divided another time or two to get to the plants in question.

Think of Philodendron and monstera not as cousins but as second or maybe even third cousins.

Then just to confuse things even more your plant may be a Rhaphidophora tetrasperma which is another sub-family Monsteroideae plant but comes from the old world rather than the new as Monstera does.

I am thoroughly confused now, thank you. Lol. My question now, the tag said 3-6 hours of sun daily. I have it in my living room where it gets light from a west window across the room and a southern window in a corner diagonally from it (indirect). There is, however, a front door a few feet away that has a large glass outer door, and when open it would get direct southern sun for a few hours, but would only be occasionally, as the wife and I work a lot. Would that be too much?

No, that's not too much sun for it. In fact, I think you plant would love it. I grew mine outdoors all summer long, where it received plenty of sunlight throughout the day. Where it responded by growing like a weed. It can handle it, don't worry.

And your plant is a Monstera deliciosa. :)

summersunshine - yes, you are correct. That's what happens when you drink single malt scotch while you post here.

Any bright light will do, an hour or two of sun or longer. Just don't keep it in the dark.

More sunlight might inspire the leaves to grow bigger though.