@ZEN Amps
Here's an oddball solution you might be interested in. PRS has a model called the 24-08 that does something interesting. Stay with me lol, I'm not recommending that guitar itself or the pickups in it. I mention it because along with the standard controls, it has two toggle switches, each switch connected to a humbucker. These are not coil taps. Instead, they activate or bypass a capacitor/resistor twisted parallel pair wired in series between the direct out of the pickup and the next component in the chain, that acts as a low shelf bass cut.
The capacitor only passes high frequencies. The lows blocked by the capacitor then instead flow through the parallel resistor, but because they flow through a resistor, they're attenuated. In other words, the strength of the capacitor controls the low shelf cutoff frequency, and the resistor controls how much those lows are cut.
What I'm saying is that if you wanted, you could pick out whatever humbucker that has the mids, highs, and output you like, and then wire in a capacitor/resistor right after that humbucker in series to tighten up the lows in whatever way you like.