Add: When looking at the top 50 in the rich list
https://chainz.cryptoid.info/nobl/#!rich , it looks like just under half are minting on a regular basis, and really wasting their coin age in the process since those are 7 million NOBL transaction sizes and up (the largest is minting a 143.5 million transaction size and is probably missing out on 90% of what could be minted if that were broken up into at least 70 smaller transactions).
I must admit that I made a mistake with this. I didn't realize that the Top 50 were not address specific, and that they include all the addresses in the associated wallet. I was also forgetting about the ability to split transactions within the same address, and the fact that the previous version of the wallet does that automatically. (The exaggerated example given is nonetheless illustrative in any event, even if it is not confirmed in practice - large NOBL holders in general do seem to be minting in a rational manner . . . even if perhaps some transaction sizes are extremely small, which works counter at the other end of the spectrum, and might warrant merging transactions . . .)
I'm thinking that study of the blockchain itself might be more efficient than individual testing . . .

. . . but I'm going to keep up a test diary for the time being anyway.