When I saw bass - lead - amp, It kind of made me think more the amp itself, as in a general purpose amp
.. I used to have an Orange 120 amp that was, I guess, effectively a guitar amp, this I used thru a random elderly 4x12 which was again, presumably, a guitar cab. This combination worked fine for me at the time for loads of 'normal' size gigs etc.
A mate at the time, who was a bass player in other bands, similarly used a Marshall 100w guitar amp and 4x12 in the same fashion.
Neither of us used fx of any kind btw.
Jumping forward a decade or few, I've generally just used a bit of reverb / chorus as a default (from one pedal) I've never gone for massive pedal boards playing live.