Some pieces are sculpted by outside artists (Gecko or Danielle Mann for instance) but manufactured and glazed in-house.
Jerry Berta (a.k.a., Bertiki or The Rainbow Professor) was the head and chief designer of Max's South Seas Hideaway In-House Production/Ceramic Studio from @2021-2022. However, he did have a crew (including Olivia Hoffman) and not all the studio's pieces were designed by him.