After a huge amount of work (mostly due to the promo set sizes and English promos having many variations), Sun & Moon promos are now updated for most languages. Still missing Korean & Thai, but those will come soon.
One interesting thing to note is that all non-English languages use SM-P as their promo set code. English simply uses “SM”. This is true for most other promo sets as well (ex: English’s XY promos vs. every other language’s XY-P). At some point I might aggregate these generational promo sets together, but for now the data structure that the site is built on does not support it.