This was there in a community post earlier and now it has been archived. So this is the list of last known values - [ "affiliate", "staff", "professional", "custom", "shopify_plus", "unlimited", "basic", "cancelled", "staff_business", "trial", "dormant", "frozen", "singtel_unlimited", "npo_lite", "singtel_professional", "singtel_trial", "npo_full", "business", "singtel_basic", "uafrica_professional", "sales_training", "singtel_starter", "uafrica_basic", "fraudulent", "enterprise", "starter", "comped", "shopify_alumni" ] Also there is a partner_test value that signifies a dev store created by a Shopify Partner account. Reference post - https://web.archive.org/web/20221205155748/https://community.shopify.com/c/shopify-apis-and-sdks/enumeration-of-plan-name-from-get-admin-shop-json/m-p/273626