5 is incorrect.
Unitarianism and Universalism is much more commonly resulted from Deism. Agnosticism has numerous sub religions. Deism does in fact, believe in God or some type of Deity. Agnostics is only a few that do.

Agnosticism is the 'belief' that there is the possibility of a deity, but you accept the fact that there is also a possibility that there is not. No agnostic firmly believes one way or the other. There are no subreligions of agnosticism, for it is not actually a religion. Just a logical outlook on could be or could not be with regards to a creator force.

"Deism is a philosophical belief in the existence of a God on the basis of reason, and observation of the natural world alone. Deists generally reject the notion of supernatural revelation as a basis of truth and religious dogma."

If Franklin was aware of most of the new discoveries brought forth by modern science, I think it's pretty safe to say he would've been an agnostic.

Thats your your opinion.

http://en.wikipedia.org/wiki/Agnosticism

That is exactly the way I defined agnosticism as. They don't really believe one way or the other, they simply accept that there is a possibility of it's existence, but is impossible to prove with science as it currently is.