For Duration tests, the most important thing to notate here is that for each status/damage type, the Source IS important because it may dictate the duration, which varies for same category statuses.

StatusSourceDuration (in seconds)
WEAKEN
WeakenedDart (bodyshot)60
WeakenedDart (headshot)90
WeakenedRonin Technique10
WeakenedCharm (Sacred Iron)20
WeakenedCharm (Foul Arrow)20
WeakenedDirt Throw (Rancid)20
WeakenedCaltrops (Demon Seeds)20
FIRE
IgnitedWay of the Flame1
IgnitedFire Arrow4
Fired UpKunai3
Fired UpCaltrops4
Fired UpDirt Throw3
IgnitedBurning Blade (Katana Perk)4
IgnitedIgnite (Ghost Gift)10
IgnitedFire Breath (Ronin Ultimate)3
IgnitedRaging Flame (Samurai Ability)3.5
IgnitedFlaming Roar (Ronin Ability)3.5
Explosive ArrowExplosive Arrow (Hunter Ability)7
IgnitedExplosive Barrel4
POISON
PoisonedDart4
PoisonedKatana4
PoisonedBow3
PoisonedToxic Vanish???
BLEED
BleedingDart (Sharpened)8* (2s delay, 8s tick)
BleedingBow (Sharpened)10
HALLUCINATION
HallucinatedDart (bodyshot)45
HallucinatedDart (headshot)30
HallucinatedHysteria (charm)20
HallucinatedDirt Throw (Lady Sanjo’s Surprise)30
STAGGER
Staggering ArrowHunter Abiliity6
StaggerFlash Bomb6
StaggerDirt Throw2
StaggerCaltrop3
GHOST WEAPONS
Dirt Throw2
Smoke Bomb16
Magma6
Caltrop45
Sticky Bomb2 sec delay (8s stun)
ABILITY
VanishAssassin Technique8
Raging FlameSamurai Technique12
Spirit DogRonin Technique25
Spirit BearRonin Technique (Ronin Charm)25
Spirit ArcherHunter Technique20
ULTIMATE
Assassin Ultimateno kills14
Assassin Ultimate4 kills, then wait14
Assassin Ultimate3 kills, then wait14
Hunter UltimateBurning Gaze4.5
OTHER
Explosive Barrel refreshMust explode to start timer500
Way of the Flame
Munitions
Impactful Throws
GIFT SHOP
Spirit Dogs (x3)Various Gift Shops90
Spirit BearVarious Gift Shops90
Spirit Archers (x3)Blood & Steel Gift Shop90
HP RegenVarious Gift Shops30
IgniteVarious Gift Shops
Duration Testing