2018 Double Rip — What do they put inside?

[ZenRooster]

I found this old double rip card from 2018 that I pulled and saved for some reason. I did a quick Google search for what might be inside, but some of the sites were merely speculating (before the product hit the shelves) and some listed "artist originals," but I couldn't find any images online, so I wonder if they do exist. (Maybe they were full-size redemption cards?)

So far, the possibilities list is something like:

Extended Base Mini Cards
Red Ink Auto Mini Cards (I saw one or two Ohtanis.)
Wood Mini Cards (But only the extended series; the 1-300 cards are AWOL.)
Artist Originals (Are these mini cards, redemptions, other?)
Metal Mini Cards

Am I missing something in the above list?

Just trying to weigh my options before deciding to rip or not. (FWIW, I'm sure that I don't have a metal mini inside, because my magnet doesn't react.)

Thanks in advance, everyone.