To calculate what is best there are two resources I have been using. First the Ortofon guide and chart here...https://www.ortofon.com/support/support-hifi/resonance-frequency
The shows that resonant frequency should be between 7-12Hz is best idea being somewhere is the middle of this range.
For the Technics with an arm mass of 12g +a headshell which is likely to be 7-10g the arm mass will be in the range 19-22g
This means that Compliance rating of 10, 15 and 20 are best suited (low to medium) 25 is marginal.
This calculator enables precise values of resonant frequency... http://www.resfreq.com/resonancecalculator.html
For this the target extremes are
19g - 7Hz - 27CU
22g - 12 Hz - 8CU
So this shows that between 8CU and 27CU depending on precise cartridge weight.
The optimum probably is 9-10Hz
19g at 9Hz gives 16.5 CU
22g at 10Hz gives 11.5 CU
Two real world example
Soundsmith Zephyr Star MMIC
Compliance 10 µm/mN
On the Technics arm this gives a resonant frequency of 10.2Hz
A 2g heavier head shell would give 9.8Hz
Compliance 12, Wight 7.3g
On the Technics arm this gives a resonant frequency of 10.46Hz
Both are good matches!