Blind Fighting, as phrased in Tasha’s Cauldron Of Everything, contains additional wording beyond the description of mere Blindsight. The entry for Blind Fighting reads:
You have blindsight with a range of 10 feet. Within that range, you
can effectively see anything that isn’t behind total cover, even if
you’re blinded or in darkness. Moreover, you can see an invisible
creature within that range, unless the creature successfully hides
Using the optional Class Features for the Fighter class which are presented in TCoE, this Blind Fighting fighting style offers not only 10ft of Blindsight, but the wording above, which by my reading at least heavily implies that you should be able to cast spells which target a space, object, or creature “you can see”, within the 10ft range of this ability.
You can explicitly “see an invisible creature”, but does “you can effectively see anything that isn’t behind total cover” mean that you can cast sighted spells on targets within that 10ft range?