Re: Pick-ups for jaguar HH
Except for actives, there isn't any pickup that truly has even volume between a full split and 2 coils in series. Though some, the EQ and preamp compression may make it close enough to not matter.
Still, a mismatched coil pickup like a 59/Custom or P-Rails is going to come closer, on the hot coil [Custom coil in '59/C, P-90 in P-Rail].
P-Rails tend to be polarizing, some people love the variety of sounds, and don't mind the radical volume changes from mode to mode -- especially series vs rail single mode. Others can't get the volume changes to work with how they want to use them, and are happier with all humbucker or all single coil guitars. If you like P-90s, and ridiculously fat but still with complex harmonics pickups (somewhat like a Tone Zone), with a bright airy sort of PAFish parallel mode, and don't mind complex switching arrangements (either a pair of Triple Shot pickup rings, or a bunch of push/pull knobs), they are very hard to beat for versatility, and have a number of great sounds... If they are the sounds you are looking for.
'59/Custom is very close to what you asked for. Bright and airy but complex series tone, with a strong single coil sound. Pair it with a Sentient in the neck, probably.