I'm essentially making a map that I want to flow like an Invasion map would where there is a team defending and a team attacking a base. I have 4 points where I want the attackers to have to capture and I have them in a sequential order. I am not sure what gametype to use. I would simply use KOTH if I could have the defenders not get any points from being in the hill (can I do that somehow?) or I would use Extraction or Dominion if I didn't have to have 2+ capture points at the same time (do I have to?) Any help or advise would be appreciated thank you!
Extraction would likely be your best bet because of the way it progressively produces objective points and can also progressively spawn in objects. Even then, you'll likely need to do some fiddling and clever map-design to make it work the way you want it to.