Accordion has wrong heading structure when using views grouping

I have the same issue. I've tried to group several titles using a field and the field is displayed several times also it's not possible to group them under a field.

I explain. For example, imagine you have a list of teams playing different sports. What I want to do is:

Basketball
- Lakers
- Celtic
- Knicks

Soccer
- Inter Miami
- LA
- Atlanta City

And I should be able to click on Sports to have the list of clubs displayed. Soccer / Basketball are Accordion header. It was possible with the jQuery Accordion module.