I've started to use Maco Cube 400 instead of HP5 for indoor portraits under tungsten light when I want conventional 35 mm B&W film. It has better red sensitivity.

As all my work goes though a digital intermediate stage, I also use C-41 colour films for B&W. Their graininess is similar to, or less than, the graininess of the B&W C-41 films and there is the added advantage of being able to control tones using the channel mixer in Photoshop. Try Fuji NPZ or Portra 800. By the way, I suspect that this is one of the reasons Kodak reduced their line of B&W C-41 films.

Best,
Helen