We have those here:

https://www.pricecharting.com/search-products?type=prices&q=Xerneas+chaos

The #91 card is holo.

This has been added.

https://www.pricecharting.com/game/pokemon-pitch-black/antique-armor-fossil-reverse-holo-72?q=antique+armor+fossil+%5Breverse+holo%5D

We have that here:

https://www.pricecharting.com/game/pokemon-promo/zarude-pokemon-center-88

Please vote for this existing issue.

https://pricecharting.userecho.com/communities/1/topics/2727-add-my-little-pony-card-support

Please give me a url or other source with the checklist info

We have fixed that particular card and sales data and updated our logic to handle those two sales.

https://www.pricecharting.com/game/pokemon-base-set/fire-energy-1999-2000-98

Admin can do that for you now.  I'll make a note about adding that capability for users too.

Added now.

https://www.pricecharting.com/console/pokemon-korean-forbidden-light?uid=G98904

Full set will show up in 24 hours.

Please include photos of these items.  I will look to add them.

Added now.

https://www.pricecharting.com/console/yugioh-japanese-limit-over-special-pack?uid=G98801

Both are in the same set because the numbering continues and the set code is the same.