I'm wondering about all the summons...
You left out the rapidly-renewable mesmer phantoms and clones. I mesmered my way through Orr today in a search for foxfire, and seldom had to fight anything beyond tricking it with a fake me.
Do you consider the ranger’s pets a summon?
If so, drakes and bears are very tanky.
For damage, mermer phantoms when traited cause loads of damage.
(and the other 8 elite specs maxed too)
The golem from golemancer runes is pretty beefy.
Also note that Minions from Necros and Illusions from Mesmers have a greater health pool in pve compared to wvw and pvp. I am not sure if summoned allies from runes also have different health pools.
The Golem from the golemancer runes has a health pool of 16500hp (not available in pvp but presumably same health in wvw and pve), while the blood fiend and flesh golem of the necro has 13k hp in wvw and pvp and 21k in pve.
Bloin – Running around, tagging Keeps, getting whack on Scoobie Snacks.
Generally a well traited minion master has the tankiest tools at his/her disposal, including traits that boost health pools themselves. Flesh Golems are your friends.