Valorant Formatting

Can someone give me a flow chart of how all of the formatting works for valorant? like theirs challengers, game changers, ascension, masters and champions but I'm kind of lost on how the order goes? And I assume that there is an order and that happens for all of the regions but when do they all converge?
thanks

Challengers Qualifiers -> Challengers -> Ascension -> Tier 1 leagues (china, americas, pacific, emea) -> International events (champs is the biggest and masters are slightly smaller)
Game changers is a separate league