Best rogue subclass for this build?

[Spacehamster]

5 ranger, 4 rogue and 1 Fighter, fighting styles: defense and great weapon fighting.

Wood elf with the double scimitar and revenant blade feat.
Wanting to maximize dpr, end levels will most likely be 5 gloom stalker, 4 champion, 1 tempest cleric, 10 rogue.

Assassin would probably be best for the advantage at round 1 if going first, the build will end up with 13-15 initiative after all so should go before most enemies all the time.

Thoughts on if any other rogue sub would give more dpr?

[bid]

IMO assassin is weak without action surge, unless the party manages to stealth/ambush often enough. Moreover, it makes improved critical useless during the surprise round. Brute pairs better with assassin.

Swashbuckler is ok for melee. You can SA even if you are the first to dash in and Cha12 improves your initiative.

[djreynolds]

Scout for expertise in nature and survival

Thief for climb speed, better than people think

Arcane trickster for spells... mage armor

But you need 5 levels, uncanny dodge is too strong

And dump defense, grab mage armor or where breast plate, take archery.... might as well if you are maxing out dexterity

[Spacehamster]

IMO assassin is weak without action surge, unless the party manages to stealth/ambush often enough. Moreover, it makes improved critical useless during the surprise round. Brute pairs better with assassin.

Swashbuckler is ok for melee. You can SA even if you are the first to dash in and Cha12 improves your initiative.

The build gets action surge tho so that’s invalid and champion and assassin pairs best since you get advantage on first round, assassinate is unreliable and much worse than the round 1 advantage.

[Spacehamster]

Scout for expertise in nature and survival

Thief for climb speed, better than people think

Arcane trickster for spells... mage armor

But you need 5 levels, uncanny dodge is too strong

And dump defense, grab mage armor or where breast plate, take archery.... might as well if you are maxing out dexterity

Why take archery for a toon that is in the frontlines? Seems inferior.

[CTurbo]

Gloom Stalker + Assassin is the perfect pair. Throw in Action Surge and the Alert feat and it becomes amazing.

If you want another option besides Assassin, Scout is perfect for ranged, and Swashbuckler is perfect for melee.

[Expected]

5 ranger, 4 rogue and 1 Fighter, fighting styles: defense and great weapon fighting.

Wood elf with the double scimitar and revenant blade feat.
Wanting to maximize dpr, end levels will most likely be 5 gloom stalker, 4 champion, 1 tempest cleric, 10 rogue.

Assassin would probably be best for the advantage at round 1 if going first, the build will end up with 13-15 initiative after all so should go before most enemies all the time.

Thoughts on if any other rogue sub would give more dpr?

For an Assassin Rogue, the greatest benefit is larger sneak attack dice because when you surprise the enemy, you get advantage and an auto-crit on all attacks for that turn. This means that you roll for sneak attack damage twice thus increasing DPR. The more you multiclass out of Rogue, the less damage you do with sneak attack. Also, there's the Assassin's level 17 feature "Death Strike," which doubles your damage if the target fails their constitution saving throw.

If you want to maximize DPR, instead of 10 levels in Rogue, I suggest you make a Wood Elf Assassin Rogue 18/Fighter 2 or Scout Rogue 19/Fighter 1, use point-buy for the 17 dexterity at level 1, then take the elven accuracy half-feat at level 4 for 18 dexterity and the +4 modifier. Take fighting style: archery for the +2 attack bonus to ranged attack rolls. Use a longbow and use cunning action to hide each turn after applying sneak attack damage. With the wood elf trait "mask of the wild," you can attempt to hide when obscured by natural phenomena.

Depending on if you choose assassin or scout, you can either deal a lot of damage on the first round starting at level 3 (assassin) or apply sneak attack twice a turn against different targets at level 17 (scout). Assassin needs the alert feat because they get advantage against any enemy that hasn't taken their turn yet--if you roll a low initiative and act last, your assassinate feature doesn't benefit you at all. Of course, this is assuming you would want to use ranged instead of melee and want to apply a lot of sneak attack damage. Otherwise, the double scimitar is not a finesse weapon and the 10 levels in rogue are somewhat wasted.

[Citan]

The build gets action surge tho so that’s invalid and champion and assassin pairs best since you get advantage on first round, assassinate is unreliable and much worse than the round 1 advantage.
Except that your build doesn't get it. You say "Ranger 5, Rogue 4 and Fighter 1".
Action Surge is Fighter 2.
Other than that I don't understand why end with a pair level in Rogue for starters.
Why not plain Ranger 5 / Rogue 5 then get Fighter afterwards?
I understand you like Extra Attack and wants to optimize on nova, but you have to think about fights you won't insta-win too. :)

For nova optimization though, yeah, Assassin is the best considering that you'll never get a chance to reach Rogue 9.
Otherwise, it could have been Arcane Trickster. :)

[Spacehamster]

Except that your build doesn't get it. You say "Ranger 5, Rogue 4 and Fighter 1".
Action Surge is Fighter 2.
Other than that I don't understand why end with a pair level in Rogue for starters.
Why not plain Ranger 5 / Rogue 5 then get Fighter afterwards?
I understand you like Extra Attack and wants to optimize on nova, but you have to think about fights you won't insta-win too. :)

For nova optimization though, yeah, Assassin is the best considering that you'll never get a chance to reach Rogue 9.
Otherwise, it could have been Arcane Trickster. :)

More thought that it gets action surge next level up but could as well make it 5/3/2 and have that I get alert next level up instead and live with a “measly” 8 initiative until then? Dunno which option is better.