Any question answered...

I don't think there's any even vaguely sensible way to use a 32h hub with a 36h rim.

If it's a dished rear you could build it half-radial onto a 36h hub and leave out half the NDS spokes to give a 27 spoke wheel. I'd want a deep and stiff rim to resist the unevenness - wheels should be round not nonagonal. (I've heard of people doing something like this with 24h rims & 24 spokes onto 32h hubs.)

Are the rim holes offset towards alternate hub flanges, or drilled at an angle aimed towards alternate flanges? If not you have more options:

Find an 18h hub and you could build a radial wheel with every other rim hole. (No, it won't work with every other hole of a 36h hub - you'll find half the holes you want are on the wrong flange.)

There's a whole family of 24 spoke patterns that will work on a 36h hub by skipping every third rim hole. You can do radial, 0.5 cross, 1.5 cross, 2.5 cross... On all of them the skipped rim holes come between two spoke that go to the same flange - lateral trueing might be hard.

If the rim holes are flange-specific then you have to skip pairs of adjacent rim holes, so your wheel may come out hexagonal.

Thankyou for the answer, enough to regret thinking of such insanity.