We are once again back to the issue of an OP trying to judge or make comments about negs from a hybrid process involving scanning. I sympathise with anyone unable to print in a darkroom but trying to draw meaningful conclusions about a neg's graininess from scanning is very difficult.

OP, I appreciate that your question was not: "How do I minimise grain?" but simply: Is there a relationship between grain and different films?"

However, if I may add the following. If scanning from negs is all that you will have the facility to do then you might want to consider chromogenic B&W film such as Ilford XP2+ where the negs are formed with dye and lend themselves to scanning in an easier way than trad B&W negs and the scans are closer to what a print from a trad B&W darkroom print will look like

pentaxuser