When an MTG Battle card is played, its controller chooses a player to be its protector (there are restrictions on this depending on the Battle type)
Historically, standard Mickey and Minnie glimmers have fluctuated in secondary market value, with early printings from The First Chapter commanding legendary prices while standard variants settled as budget options
Misty Salon showcases how some Rooms can care about how many halves of a Room you have unlocked
Secret Rare Pokemon Cards will also have the same kinds of distinguishing factors as Ultra Rare so its possible to mix them up, in order to verify if your Ultra Rare is a Secret Rare you'll need to take a look at the cards set number
Charizard's dominance of the PSA population rankings mirrors its dominance of the market in general: it is the most sought-after, most financially significant, and most culturally resonant character in the franchise, and every new Charizard card generates outsized grading interest regardless of the set it appears in, the rarity it is printed at, or the era it belongs to