I really like WFs so far, you can read what they are like on a multitude of websites but i'll describe simply:
black garden = martyrdom, 10v10 one person holds an object and takes mad damage from it, the team with control gains points based on time in control. the object will eventually kill it's bearer, and either be picked up and respawn in the middle very fun, quick (5-10m) warfront
codex = 4 control point domination 15v15, 4 nodes, 1 with high ground and better defendable locations. the top node is called codex and is worth more points per tick (8 vs 6 or something) so if 2:2 control, it's not tied. Makes for interesting strats, based around codex control.
the ctf one = played it once or twice, fairly generic ctf, nothing to complain about though
battle for port scion = really complex so far only played it once, but it seems like a DotA style AoS where there are also capturable "flags" and objectives. however it's much smaller. Potential for SO much fun, right now i'm a but overwhelmed. I think once I get in there with 5 members from my guild it will make a lot more sense.
(I'm playing a pyro mage, loving it)