League1 Ontario's third tier has announced its inaugural team, bringing semi-pro football back to Sudbury.
!greater_sudbury@lemmy.ca is actually the 2nd or 3rd oldest city-based community on lemmy.ca . It's not very active, but should definitely be added to this list.
Also, !canadasoccer@lemmy.ca would be a good community to add to the soccer category.
For team-specific Canadian-based soccer teams, there's !torontofc@lemmy.ca of the MLS (US-league with 3 Canadian-based teams). Other MLS sides include Vancouver Whitecaps and CF Montreal, which I don't think have a community created.
None of the 8 Canadian Premier League teams, nor any of the numerous League1 Canada sides have taken steps to establish their communities yet (as far as I know).
Peertube is the Fediverse equivalent. It needs more content, and more instances to host said content, but it's a good start.
The 2024 W Gold Cup qualifying tournament will take place during the FIFA Women’s International Match Windows of September, October, and November 2023 and will include the participation of 35 Concacaf women's senior national teams.
Absolutely create them, but more importantly post to them & where possible, post about them. People often hold back from posting if a community seems vacant, so its important to add new stuff regularly to your community.