By "media", I mean whether it's a manga, a novel, an illustration book / artbook of sorts... (in this case they're all manga).

By "medium", I mean the type of physical good. They're all Ondema except for the last one which is Copy. Ondema means on demand, which means ordered through a printer with a special binding (aka this was printed offset). Copy means it's stappled (copy magazine).

Characters and restrictions.

Here it's "Goten centric" (literally: Goten (kanji) - middle/center - heart) and it's "all ages" (all of these are all ages. Other otherwise see R15 or R18)

Price (in yen of course) + a little blurb about what's inside (this one in particular is about Xeno Goten yeeting across timelines to grab other Gotens lol I can't wait to buy it)

You can check previews of that book here if you want.

Now let's focus on these on the bottom row:

This is Trunks & Goten (non ship)

This is Trunks x Goten (ship, i mean, they're holding hands!!! )

This is Tapion & Minoshia (transcribed as Minotia) (non ship)

If you get to follow people who sell their doujins, you'll sometimes see "there's no CP element". CP in this case means Coupling (aka ships), not child pornography XD

Cat for scale: