OK, best I can figure out so far:
Two TT, single phono preamp (avoid separate A/B switch)
MM AND/OR MC seems to be the solution.
single switched input or two separate inputs individually selected
rear or front switching
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most phono preamps that include both MM and/or MC have a single input, and a switch to send that input to it's internal mm or mc. Single TT only,
some phono preamps have two separate inputs, MM and MC, allowing attachment of TWO TT, you select which input/which TT to use via switch
Location of switch is most often in the back, a few have front switch to choose which input to use.
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These three have front switch to make it easy to change and remember where it was left.
Cambridge Audio, $300.
https://smile.amazon.com/dp/B07932QK4N?tag=amz-mkt-chr-us-20&ascsubtag=1ba00-01000-org00-win10-other-smile-us000-pcomp-feature-scomp-wm-5&ref=aa_scomp
Music Fidelity, $240. black or silver
https://www.ebay.com/itm/Musical-Fidelity-LX-LPS-mm-mc-phono-preamp-factory-sealed/372169832743
phonopreamps, $75. black or silver
https://www.phonopreamps.com/TC-760LCpp.html
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Soooo, I can use P mount MM on the Technics Programmable Compact, SL-J33, seller took my $90. offer for this 'fixable' one
https://www.ebay.com/itm/Technics-SL-J33-Quartz-Direct-Drive-Auto-Turntable-As-Untested-As-Defective-READ/283873140230?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
and use 1/2" MC on the Mitsubishi Vertical LT-5V. Swapped with Bill, got one working wonderfully, mice had their way with the other's wires. I was blasting it in the main system yesterday, it is amazing technology and sounds as good as your cartridge. I will need to move it to compare it's linear tracking to my 12'5" long pivoted arm. (very similar cartridges, Shure SAS/AT ML
https://www.google.com/search?q=mitsubishi+lt-5v&rlz=1C1SQJL_enUS881US881&sxsrf=ALeKk01qKkXTLe4XINZQLI31kFzheqnqkg:1592921542967&tbm=isch&source=iu&ictx=1&fir=UlmguCxs63w08M%253A%252Ch2ajrwZekgGxlM%252C_&vet=1&usg=AI4_-kRFR4PSa5K3FXG-bJJXQkU9wtpUBg&sa=X&ved=2ahUKEwjMxuSVj5jqAhUOlXIEHZGPBysQ9QEwBnoECAcQHQ&biw=1596&bih=794#imgrc=UlmguCxs63w08M:
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reminder, 2nd office system, often just proving cleaned LP's for sale have no problem. It will be accessible while starting LP, but it will be blocked by my monitor, so looks are not important in this situation.
reasons not to go for $75. unit?????