To me it is not the developer that has the larger variance, but, it is the "Film Grain Technology"
Old School (Tri-X) Gritty (high speed), and not as contrasty as newer emulsions.
New School (Tmax 400) smoother tighter grain, more contrast.
Though with some developers, you can enhance the grain.
Rodinal 1:100 or higher with old school films rated higher than 400 in most cases. Rodinal does better and recommended for slower films by the makers.
Also, different dilutions (1:50 plus) may affect grain also, especially if you use stand or semi-stand (very little agitation)
This is my experience, yours may vary in results
But, the best way is 10x loupe, and a lightbox to look at the grain after development. Take notes on what differences you see in the grain.
Here is a first time use of Kentmere 100 at 100 in HC110 1:60 (H) with agitation every 2m for 3sec. The grain is bit more than a 100 old school film, but, it has a good tonal range and sharpness
HC110 1:30 (B) may result in tighter grain...don't know, I need to make a test.
2015 Classic Street Photography-Crop A
by Peter Arbib: My Classic Street Photography
, on Flickr