Thanks for that.
I’ve gone through your (excellent) post and since a standalone 'MG24 should draw <5uA in EM2 (light sleep) wanted to try find if there are any device/s causing additional power consumption (may even be the MG24).
I’ve used the same code and test setup on my own MG24 modules to get the 5uA value.
May have to remove the SAMD11 