Most efficient Bard Rotation DPS wise

[Viridiana]

We could easily have the scenario be 2 ticks/1 tick, or 3 ticks/2 ticks, or what have you, you still will windbite first.

Not quite.

At 2/1 tick, you would Venomous Bite for 170, then realize that your Windbiter would only be 105 and it's better to Heavy. You wouldn't Windbiter->Venomous, because that loses to 2x Heavy

V->H = 170+150 = 320
W->H = 150+150 = 300
H->H = 150+150 = 300
W->V = 150+135 = 285
V->W = 170+105 = 275

At 3/2 tick, Windbiter edges out Venomous.

W->V->H = 195+170+150 = 515
V->H->H = 205+150+150 = 505
V->W->H = 205+150+150 = 505
W->H->H = 195+150+150 = 495
H->H->H = 150+150+150 = 450

Of course, this all assumes that you can forecast when the enemy will die with that much precision. There's a reason I usually stick to W->V, even though I know that there are cases where Venomous should be priority.