#1
I can sing from a B2 to a G4. I used my guitar to determine this, I can hit the B on the 5th string and the G on the first. I hope I have the octave classes correct. Thank you for your help!
#2
Tenor sounds like.
Most tenors can hit up to C5 but G4 is common if you havent mastered mixed voice yet.

Could be baritone too. Its hard to tell without hearing your voice or knowing how much training you've put into it. Though Im about %80 sure you're a tenor.
#3
Ehhh, yeah you're kind of in that Baritone/tenor range. I'd call you a Bari just because you don't quite have the top end but also lack the real low end.
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