Film doesn’t have adjustable white balance like digital. Each film is balanced for a certain type of light, and if the light doesn’t match, you correct with color-balancing/conversion filters.

In your case, your Profoto B1 and D2 are both around 5600K, which is essentially daylight/flash balanced. Fuji FP-100C is about 5500K, and Portra 400 is daylight balanced, so those should already be a close match under these strobes. In practice, you likely won’t need much—if any—filtration for color film.

A useful note from the specs: the B1 can vary somewhat in color temperature across the power range, especially in Freeze Mode. If color consistency matters, Normal Mode is the safer choice.

For Ilford FP4 Plus, white balance isn’t relevant in the color sense because it’s black and white, though filters can still affect tonal rendering rather than color balance.

So the simplest answer is: start with no correction filters, use the strobes in their more color-stable mode, and fine-tune after scanning if needed. If you ever use a light source that doesn’t match the film’s balance, then use standard warming or cooling conversion filters.