I think it would only be fair to count S2 if it immediately followed S1. A big gap means I cannot recall details from the original.

Working down the list:

  - Night Agent: S1 2023-March, S2 2025-January => 2 years
  - One Piece: S1 2023-August, S2 2026-March => 3 years
  - Four Seasons: S1 2025-May, S2 2026-May => 1 year
  - Running Point: S1 2025-March, S2-2026-April => 1 year
  - Beef: S1 2023-April, S2 2026-April => 3 years