10k - Kitsun Optimized Deck

Hi, new here.
Came here from WK. I’m wondering where I can see the tag explanations for the community deck?

What’s L1, Set01, 1k and so?
I’m looking to batch hibernate known words as it’s not fun when my first lesson is 一つ

I believe L1 would correspond with WK level 1 and so on. There is also a WK deck filter I posted in the CC which also includes kanji entries.