Since there are tons of old collectible commons that dont see any play, theyd take up the majority of spots on this list
Sort of, as far as which Starter they are for though
Almost entirely because of duplicate protection, they have now 100% lured me in as a customer to start seriously playing on MTG Arena and spending money, while also still collecting Common, Uncommon, Rare sets on MTGO (though no longer Mythics, it's too expensive to keep that up)
Players confront the mysterious Team GR while building decks and challenging Club Masters in expanded regions
Others are unique to Collector Boosters and do not have mechanical counterparts in Commander decks
This three-card core of Yorion, Alrund, and Kolvori is very compelling to me and there are a fair few different ways to build around it