I've had probably hundreds of different cacao fruits, its generally pretty random in terms of pulp to flesh ratio for me, but there is a specific variety I've had called giant red/yellow triniatro. The fruits are really big and theres a ton of sweet fruit around the seed, almost as much flesh as the seed size.
I've also had very small fruits that had lots of sweet flesh, so that's why I think it can be sort of random. I've even seen trees with different colored and size pods on the same plant.