..looking for cartridge recommendations that are a good match for the tonearm and have a musical character.
I think the "music character" is much more important than just matching which gives you nothing, because you have absolutely no problem to use any mid or mid-high compliance cartridges on Technics tonearm with stock technics headshell. You can simply use this calculator (hope it will help) https://www.ortofon.com/support/support-hifi/resonance-frequency
Resonance frequency can be calculated by using the formula
f = 1000 : (2 x π x √ (M x C)) where:
f - Cartridge resonance frequency in Hz
π - 3.14159265359...
C - Cartridge compliance lateral in µm/mN
M - Total tonearm system mass which is a sum of Mass of cartridge, Mass of headshell and screws and Effective mass of tone arm (all values in gram).
• Resonance frequency within 7-12Hz is optimal for the system.
• Resonance frequency slightly outside optimal interval 6,5-7Hz and 12-14Hz can be considered as a possible that probably can be used without problems.
• Resonance frequency outside the interval 6,5-7Hz and 12-14Hz is questionable, and the system might not work properly.