His first full season of AHL hockey was offensively disappointing, as Aubé-Kubel was still learning the league, but the following year, he improved both on point-scoring and physicality.

As a fourth-line winger, Aubé-Kubel had a productive 2019–20 season, but fell victim to a sophomore slump in 2021, with a particularly high number of penalty minutes.

Alex-Anne became a strong figure skater, participating in national and international competitions, while Aubé-Kubel practiced ice hockey and speed skating.

[8] Aubé-Kubel, who played on the second offensive line, spent the season honing his defensive skills and increasing his physical strength.

[15] Despite his strong scoring, the Foreurs failed to advance past the first round of QMJHL playoffs that year, falling to the Blainville-Boisbriand Armada in a best-of-seven series.

[19] Flyers general manager Ron Hextall told reporters that Aubé-Kubel's deficits were because he "didn't understand the American League ...

[22] As his offensive ability was improving, however, Aubé-Kubel struggled with the physical element of the game, receiving three AHL suspensions for illegal head checks to his opponents, and his 86 penalty minutes were the highest of any year in his career thus far.

[23] During the 2018 Calder Cup playoffs, Aubé-Kubel received a three-game suspension for an illegal head check during a division final game against the Charlotte Checkers.

[26] Although Aubé-Kubel attended the Flyers' training camp and played in a series of preseason matches, he and Philippe Myers were assigned to the AHL to begin the 2018–19 season.

Aubé-Kubel had paired well on a line with Claude Giroux and Jordan Weal during a preseason match against the Boston Bruins, but, at the start of the season, there was a limited role for his skill set in the roster.

[28] He made his NHL debut two days later, skating on the fourth line with Scott Laughton and Jori Lehterä in a match against the Anaheim Ducks.

[31] Going into the 2019–20 NHL season, the Flyers experienced a change of management, with Alain Vigneault replacing Dave Hakstol as head coach.

[30] Despite impressing Vigneault in training camp, Aubé-Kubel was placed on waivers at the start of the season, to allow his assignment to the Phantoms.

[38] He scored two goals in the Flyers' 4–1 defeat of the Tampa Bay Lightning during the round-robin portion of the tournament, helping the team to clinch the top seed in the Eastern Conference.

[42] On January 19, 2021, Aubé-Kubel was fined $4,633.32, the maximum allowable under the NHL Collective Bargaining Agreement, for what Buffalo Sabres coach Ralph Krueger called a "deliberate hit to the head" of skater Rasmus Dahlin.

[17] After struggling through the first part of the Flyers' 2021–22 season, with only one assist through seven games, the team placed Aubé-Kubel on waivers on November 12, where he was claimed by the Colorado Avalanche.

[46] Aubé-Kubel made his debut with the Avalanche placed on the third-line alongside Tyson Jost and Alex Newhook, in a 4–2 victory over the Vancouver Canucks on November 17, 2021.

[51] The Avalanche swept the Nashville Predators in the first round of the 2022 Stanley Cup playoffs, with Aubé-Kubel recording 19 hits in the four-game series.

[61] As a free agent from the Capitals, on July 1, 2024, Aubé-Kubel was signed to a one-year, $1.5 million contract with the Buffalo Sabres for the 2024–25 NHL season.

[64] T. J. most recently appeared with the Guildford Flames of the Elite Ice Hockey League,[65] while Thomas skated with the Northern Alberta Institute of Technology (NAIT) Ooks.