I would try to use as simple and well-understood words as possible.
What about My meetings and All?
The "All" list would include my own meetings as well. It could be indicated that I am already participating in a meeting, but I see no reason to sort them out from the All list.
From your comment it sounds like the "Actu" list might be a "Suggestions" or "Available" list. If you have another place for showing All, then the "Actu" list might not have to show them, although I would still find it odd to show all but mine.
If this list is like a feed shared among several users, this could be a place to communicate to me as a user how and where my posts appears to other users. Just like I see my own Questions here on StackExchange, while I have to go to my profile to see my activity.
It all depends on what metaphors you choose to use through out the app. If the concept you choose draws on apps or websites the users are familiar with, adopting the terms from there might make them more graspable, even if less describing. And in either case, the title does not have to say it all, you might add a title on top of the lists, clarifying the purpose of the list.
- Available, Today or Suggestions and Confirmed, Booked or Attending (metaphor: ticket booking)
- Public and < username > (calendar)
- Home and < username > (facebook)
- Inbox and Attending (email/calendar)
If you are on a stage of what you want to show, then naming it will be easier when you got the concepts sorted out. If you already done that, then perhaps a few wireframes or screenshots will make the question easier to answer.