Rogue decks with legs?

Hi all!

Which are some decks that are off the radar of most, or say that represent under 1% of the meta, that managed to 5-0 some challenges or put a top 8 in a 60+ppl tournament?

Basically some underexplored brews, underrepresented decks, that odd deck that only worked once because of good luck and the right meta call, or even old decks that still managed to sneak a result or 2 like maybe White D&T off the top of my head.