I spend 5 months singing in the choir, at the time I always had trouble singing E4. I know that I'm a b bec?

My choir instructor always made the tenor and the b sing these notes, I was always told that my low notes were very rich, richer than any other of the b voices in the choir. I was so confused I had a very slow vibrato mainly because of the weight on my voice. I started doing agility exercises/ rifts and runs I immediately notice that my vibrato was quicker than ever before. I had a lot of tongue pressure at the back of the throat when I started doing vowel exercises such as la ga, ya ya. ya ga, ta la, and la ga again my tone production sounded better than before. My choir instructor always told me that I have a wide vocal range and access to the higher notes I always looked at him like he was crazy. One day I was doing scales with a friend of mine who directs the choir in the church, I notice that I was able to sing all the way up to F4 my lowest note is a D2. With a fast vibrato, and a rich lower register I believe I'm a B Baritone my highest note so far in head voice is a G5 I'm learning new things about my voice everyday I just want to know if I'm right or I'm wrong about myself being a b baritone and am I taking the right guide lines in learning about my voice.