Yeah for the triads (and probably the 7th in most) that’s true. It’s not really an important distinction for playing along with others.
We’re getting really, really far afield into theory from the original question but now I just realized I honestly don’t know, when improvising a bassline in a chord progression, if it would be better to stick with notes in the chord key or notes in the mode from Cmaj - like, if the chord progresses to Emin, is it ok to play F while improvising, or should you play F#? F is in Cmaj but not Emin, which uses F#. I am guessing it would be better to stick with the chord key so you don’t sound discordant with the guitar chord. Then again, maybe it would just take the song into one of the other modes like Phrygian then, and still sound cool 