My tiered rankings! Moved a couple around from my initial list after looking at it.

— My Favs —
2.02 - White Bear
3.06 - Hated by the Nation
3.04 - San Junipero
4.06 - Black Museum
2.04 - White Christmas

— Great —
1.03 - Entire History of You
4.04 - hang the dj
4.01 - USS Callister
3.03 - Shut up and Dance
3.02 - Playtest

— Solid —
4.03 - crocodile
1.02 - Fifteen Million Merits
3.01 - Nosedive
4.02 - Arkangel
3.05 - Man against Fire
5.01 - striking vipers

— Cool, but not Black Mirror Cool —
4.05 - metal head
1.01 - The National Anthem
2.01 - Be Right Back
5.02 - Smithereens

— Dumb —
5.03 - Rachel, Jack, and Ashley Too
2.03 - The Waldo Moment