@nomis@chaos.social I don't have experience with this particular kind of printing, but a bit of advice I've repeatedly seen over the years is "if you need a specific printing technique, go to a local physical independent print shop and ask them, because they are often extremely flexible, far more than the chains and online providers".
@nomis@chaos.social (I guess that in this case you could literally show up with the different mugs and ask them what they can do to replicate the nice print)