Help Me Understand Champion Roles
I don't understand what some champs are designed to do. I know what they do, but it doesn't make sense to me. I'd appreciate a little enlightenment to spare me from my confusion.
Before I ask about certain champs, I first want to give a few straightforward and obvious examples.
Ex1 Talon/LeBlanc - he's an assassin, looks for an opportunity to detonate a high priority squishy and gtfo
Ex2 Amumu - team diving tank. Initiates team fights by pulling himself to the front line and CCing enemy team, allows him to get to the backline and pressure enemy high damage threats. If ignored, can kill squishy targets.
Ex3 Illaoi/Darius/Renekton - Bruisers who can easily sustain in the midst of the enemy team while dealing substantial/consistent damage. Capable of being a huge threat with a proper backline and team composition.
Other easy to understand champ types/roles are: Veigar/Ziggs Xin/Irelia Teemo Wukong/Camille/Ekko Warwick/Udyr Etc etc
I understand why a lot of champion were implemented into league as they have a straightforward goal in mind that doesn't differ from laning phase to team fights.
Finally, for the champions who have missions/goals I cannot fathom.
Gangplank Fiora Singed Nunu/Ivern Rammus Ryze
There are more, but clarity for these will suffice for now.
Not saying there's anything wrong with them, but what am I actually supposed to do with them if I pick them. I know how they should be played, I've watched their champion spotlights, it simply doesn't make sense and I needed it broken down to a kindergarten level.