12s Cassette which fits on HG freehub - Ideally <46t?

I've been pleasantly surprised by Sunrace's 11sp cassettes, they've lasted me really well.

The 12sp may only come in 11-51 though, if the size is a deal-breaker?

https://www.merlincycles.com/sunrace-mz800-cassette-12-speed-175131.html

Garbaruk have an option for this, but it's over £240!

Lovely bit of kit. Superlight and quiet.

https://www.garbaruk.com/shop/product/12-speed-shimano-hg.html

Same suggestion as chakaping, but I have a 12sp Sunrace cassette on an HG freehub and it has been pretty good for me.

It has to be less than 46t, really 44t as it's for a SRAM Force AXS rear derailleur.

Sunrace 12 speed road

https://sunrace.com/product/csrz800-waw/

I have the Sunrace which came on my Zwift Hub for the Privateer rides of my lad, works perfectly well.

How about this and set the limit screw to not hit 1st gear?

SRAM NX cassette is 11-50, but the 2nd largest ring is 42 - as above, could you limit the travel to 11 cogs and that would give you 11-42?
Bit of a compromise, but could work.