I removed the duplicates and fixed a couple of seasons that were sabotaged. I kept the original airing order, which is actually a mix of the seasons used by Discovery UK and Discovery US:

• Season 1 to 11: These seasons were produced by Attaboy TV (UK) and allegedly all premiered in the UK.
• Season 12: Half set in the US and this is the last season produced by Attaboy TV (UK). It first aired in the UK and later on Velocity (US).
  
• Season 13: Set in the US and produced by Discovery Studios (US). It however was first released in the UK.
• Season 14: Set in the US, produced by Discovery Studios (US) and the first known season to premiere in the US . It was released as Season 17 on Velocity.
• Season 15: Set in the US, produced by Discovery Studios (US) and premiered in the US. This is Season 18 on Velocity, and all the episodes previewed on MotorTrend.com one week before their TV debut.
• Season 16: Set in the US, produced by Discovery Studios (US) and premiered in the US. This is Season 19 on Velocity.
• Season 17 to 19: These seasons all appear to follow the same pattern. They are set in the US, produced by Discovery Studios (US) and premiered in the US. They aired as Seasons 20-22 on the MotorTrend Network, but were previously released on MotorTrend.com.
• Season 20: This season aired in the US as Season 23 on the MotorTrend Network and were previously released digitally. In the UK, this season was released as the second part of Season 16.
• Season 21: The protagonist of the show moved back to the UK. This season first aired in the UK Discovery as Season 17, but the episodes previewed a week before on Discovery+ UK.
• Season 22: In the US, this season aired as Season 25 on MotorTrend starting on July 26, 2022. In the UK, it aired as Season 17 on Discovery.
• Season 23: This season was first broadcasted on Discovery UK as Season 18 starting on March 20, 2023. In the US, this season aired as Season 26 on MotorTrend starting on July 25, 2023.
• Season 24: To be confirmed. This season started airing on Discovery UK on October 16, 2023.

Episode groups can be used for the international orders: https://www.themoviedb.org/tv/10710-wheeler-dealers/episode_groups