Confirmed Nest I found so far, (by Nest, I meant they spawn consistently in numbers) Not just random 1-2 spawning every 20 minutes.

@KLCC Park
- Poliwhirl
- Clefairy
- Nidoran
- Bulbasaur
- Slowpokes
- Dodrio & Doduo
- Eggxecute
- Pinsir
- Eevee (Semi common)

@One Utama
- Eevee
- Bulba (Semi common)
- Abra (Semi Common)
- Rare Sighted [ Venusaur 15/8, 1pm+ ]

Just thought I should share.

Anyone has Pikachu, Dratini and Ponyta NEST to share please? Thx.