I am a newbie and I am still struggling, so please take what I am about to say with huge grains of salt. Please also note, I am not even comparing same format film.
While I don't disagree with what everybody else so far has said, as a newbie returning to film after many decades, I had to start somewhere. For this reason, I just picked two film and started playing. One is Tmax400 for 135 and the other is Tri-X400 for 120.
I struggled with Tmax for it kept giving me very hard, high-contrast look. I hated it for a while. That is, until I started managing my tempearture very carefully using water bath and precise control. Then, It gave me good contrast, very clean, smooth look. Grain is so small, I forget this is ISO 400 film.
I use Tri-X 400 for medium format. This is a very forgiving film. First time developing without water bath, it gave me the look I wanted. Very traditional B&W looking result - if that means anything to you. Somewhat grainy and I use it for this purpose sometimes. Contrast isn't as high as Tmax. Nice soft to neutral look.
I'm sure a lot of these parameters can be controlled but as a starting point newbie, using published figures, this is what I got. What I took out of my experience so far is, Tmax is rewarding but needs careful processing, and I can be sloppy with Tri-X but has more grain.
My point in posting this is not to contradict with folks with experience. I just wanted to share my newbie impression and hope it will help another newbie just starting out. I hope to get to a point where chart will be useful and can manipulate result at will.