Marksmen and their Classifications
Marksmen/ADCs are usually played around when picked in a team composition. Depending on their strengths and weaknesses, other roles usually adjust to compensate for their needs and depend on what they can provide.
Marksmen/ADCs as Classified by their Strengths
Generally, I classify marksmen according to why their teams pick them. These include Utility, Poke, Duelling, and Heavy Burst or Sustained Damage. These classifications also involve how much gold share the marksman has to have in every stage of the game, and how the team plays around it.