Chosen No. 8 by the Seattle Kraken at the 2024 NHL Draft, Catton signed his entry-level contract July 5, 2024.

The Saskatoon, Saskatchewan, native played two seasons for Spokane in the Western Hockey League, leading the Chiefs in 2023-24 with 116 points (54 goals, 62 assists). He became familiar with the Emerald City while playing against the Seattle Thunderbirds and Everett Silvertips, creating a comfort to help with his transition into the Kraken organization.

Catton was the third draft-eligible WHL skater since 2000 to top 115 points in a season, joining Connor Bedard (143 points in 2022-23) and Nic Petan (120 in 2012-13). He also won 53.4 percent of his face-offs, led the WHL with seven short-handed goals and was third on his team with 30 power-play points (13 goals, 17 assists). His 10 points (eight goals, two assists) in five games helped Canada to a gold medal at the 2023 Hlinka Gretzky Cup, and he was named the WHL U.S. Division Player of the Year.