I've had one built by John Elton Doucet from Church Point. The brand was "Cajun". Bought it in 2016 and it was a great and he was a friendly guy to deal with. Not sure if he's still building accordions anymore.
Ed Poullard has been building great accordions for a while now - superb instruments. Jesse Lege has also recently started building, though I haven’t had the opportunity to try one. Finally, Craig Vincent is a younger builder who has been cranking out some great boxes.
Thanks for those names. Do you have contact information for Ed Poullard and Craig Vincent and Jesse Lege? When I met Jesseat a festival 5 years ago he told me he was starting to build.