This reminds me of the DC series Young Justice, which I watched recently with my boyfriend. In Season One, a small band of super kids (proteges of Batman, Aquaman, The Flash, Green Arrow, Superman [kind of, it's complicated], Martian Manhunter, etc) is formed by the Justice League to train upcoming supers. In Season One, we can observe all stages of group development except adjourning, which happens after Season Two, when most of the members graduate up to the Justice League or retire. As the group is forming, the young supers start getting to know a bit about each other and start to learn what they will be doing as a team. A lot of episodes revolve around storming, as Robin and Kid Flash fight over leadership and Superboy loses his temper with everyone on the team. Finally, an eye-opening experience that nearly resulted in the team's defeat helped calm the squabbling boys, and everyone on the team decided Aqualad, the most calm and mindful, should be the leader. Norming began here for the team. When a new member, Artemis, joined the team, she and Miss Martian butted heads, but soon became cohesive. Occasional drama resurfaced, but for the most part, the team had entered and remained in the performing stage by this point, and worked together to be a formidable force against the Justice League's enemies. There was much less friction between team members in this stage when other young supers joined the team or allied with it temporarily.
I have attached a link that briefly goes over the plot of each episode. Unfortunately, DC series do not offer episode viewing without a paid membership.
https://youngjustice.fandom.com/wiki/Season_one
There is also what may be a bootlegged season on YouTube that seems to have all the episodes. Here's a link
https://www.youtube.com/watch?v=cemTPLaM9hI&list=PL4cTQ22OQT815cm1yofLM6XZ4RfQ8ALeb&index=2