I don't really like to take decks apart so I have multiple play sets of certain staples mostly try to avoid expensive niche cards I don't get to play much these days this is what I have put together right now.

Modern
Burn main
U/R Storm

Pauper
U/B Delver main
Inside out combo

Legacy
U/B Shadow main
Death and Taxes
Dredge
R/B Reanimator
Elves

Vintage
U/R Xerox main
Powerless Eldrazi

Commander
Teferi, Temporal Archmage competitive
Karador
Kess
Krenko

Old School
Mono Black