Guild Wiki has problem. It says Ssaki, Wing Three Blade, and Sun the Quivering are doable but THEY ARE NOT. I am E/A and can't kill them their armors are too thick to penetrate.
However, I found new boss that are not listed in Guild Wiki which are:
Chung the Attuned, Mina Shatter Storm,Baubao Wavewrath, Cho Sprit Empath, and Ziinfaun Lifeforce. Sliver Armor targets them 100%. Milefaun as well( tough to get there but works fine once sliver targets him with enough mob)
Also i think these bosses are only duable with E/A only ( 90% sure) which are: The Dream Hunter, Milefaun Mindflayer, and Rahse Windcatcher. Sliver armor targets them 100% (except Dream hunter if zone has forrest still with dp I killed him)
My Build for these three bosses are simple: dark escape,shadow form,elemantal power glyph, sliver armor, Teinai's Crystals, Crystal wave, aftershock, and obsidian flame.
Result: 3 chung's focus, 1 baubo's shield, 5 windscratcher, 1Milefun staff, and 2 cho'c vice.
Thanks to: Desire who invented this amazing build I am so thankful to him I got so many greens cause of THIS BUILD thanks.
Problems: aoe spell can go through Shadow Form ( Lian's double dragon as instance), Sliver Armor doesn't target the boss always(constructs tank and ritualist esp Ssyn Coiled Grasp, time eater rarely
), sometimes boss run away at the end( sun reach and darkrrot entrop), and major problem seems to be getting there.
Successful rate FOR ME(e/a): 100% ones

factions only I didn't try luxon boss 100%): scar eater,Chung the Attuned, Mina Shatter Storm,Baubao Wavewrath, Cho Sprit Empath, Ziinfaun Lifeforce, The Dream Hunter,Rahse Windcatcher, and Woe Spreader( only I start from Gyala mission town).
90% -80% FOR ME(E/A): time eater, jayne( hard for me to get there), Ssyn Coiled Grasp( like Ironclaw kurzicks are easier for farm this guy) , constructs( except tanks and ritualist), strongroot, and Rien, the Martyr( watch out for traps one partner is preffered needs to trigger traps ) ,chkrr locust lord( I start from the Jade Quarry)
70% or lower FOR ME (E/A): sun reach ,Darkroot Entrop, Kyril Oathwarden, Ghial( hard for me to get there), and maybe more don't remember..Ironclaw( I am kurzick can't be resed there but when luxon had the town i killed him) ,Hukhrah Earthslove(sliver issues and hard to get there)
seems possible in fact it's not : Lian, Dragon's Petal(aoe spell), ssaki, Wing Blade, Sun the quivering(traps hard to get there), Orosen, Tranquil Acolyte( mesmer signet and sliver issues, Flower Spiritgarden( healing not many enemies), Chkkr locust lord( sliver issues), Shreadder( bleeding condition hard to get there), Ssuns, Blessed of Dwayna(sliver issues hard to get there),Chehbaba Roottripper( sliver issues),Arrahhsh Mountainclub( less enemies), Tomton Spiriteater(sliver issues), Ryver Mossplanter(armors but killed him 2 times), Arbor Earthcall( little enemy unfortunately),
Lou, of the Knives( hard to get there little enemy), Xuekao, the Deceptive( too little enemies),
Salke Fur Friend( thick armor traps!!!),Jin, the Purifier(signet interrupts), skill eater(sliver issues), and pain eater( sliver issues spirits are being target of sliver).
I have not tried these bosses but farmers are saying it’s doable which are: Kenrii Sea Sorrow, Assassin's Construct
, Reefclaw Ragebound, Untouched Ancient Ky, and Sword Ancient Kai.
I tried Kenrii Sea Sorrow ( hard to get there sliver issues) but got his staff eventually, Reefclaw Ragfebound( not enough mob to kill him but easier than Kenrii), and Assassin Construct( monk heals him and besides that works perfect)
BOTTOM LINE: Generally it's awesome but I watched Desires and other youtube videos many times and practiced many many times. Now I know what to do when I farm which one and how to get there efficiently. Got many green I got 19 greens( individually). THANK YOU DESIRE BUT IT IS NOT PERFECT FOR EVERY BOSS( NO OFFENSE) STILL THANK YOU THANK YOU DESIRE