Once upon a time, i.e. when I was a kid, we had a b/w film called Adox KB 14. It was the nicest film I have ever used (= shot with, as well as developed).
KB was short for Kleinbild (i.e. 35mm film), and 14 = 14 DIN (about 20 ASA),
and it is probably best known for its small grain & being very sharp.
The grain was so small, that you couldn’t even find it in a grain focusing scope…
Ref with examples: http://www.labeauratoire.com/film/adox-kb14/
I have looked around for any emulation of KB14, like a HaldCLUT &c, but no luck so far.
Claes in Lund, Sweden