What Cocktail do These Ingredients Create?

Cafe Society
1

2oz dark rum
2oz white rum
1oz lime juice
1oz pineapple juice
1oz simple syrup
Drop of bitters

Drop of grenadine

I shake these ingredients with ice then strain into a glass filled with ice and toss a chunk of lime peel from the squished lime on top. Then I finish with a drop of grenadine over the whole thing which sinks to the bottom and makes it look cool.

It tastes fantastic and I’ve been averaging 2 per night and blowing my budget on rum. I’m wondering if I’ve stumbled across a tiki age classic. Is there a name for this concoction?

2

Mai tai fits most of the ingredients but the Mai tais I have had included orange juice or orange liquor.

3

Rum Swizzle variant?