With color, it's nice to have a similar look with different speeds, like Portra, which I used 160 for daylight and 400 (shot at 800 and developed normal) for night.
With black and white, you can get a similar look with different film & developer combinations. I like the grain of Acros 100 with Rodinal and found it matched well with the grain of Tri-X pushed 1.5 stops with Tmax or Xtol developer. So, if you don't mind some nice grain, see what you get with a 400 film in a regular, e.g., D-76, developer, then if you need slower film for daylight, try Rodinal with Acros 100 or FP4 and the grain should match well. And if you need to push your 400 film, Xtol does a nice job without increasing the graininess.