I live on a tropical island near the beach so there would be lots of colourful water and flying types, lots of bug types too, a few fire types for the warm year round weather & some normal types.
Here's a list based on animals here/ones I've seen:
Water types: Feinneon, Goldeen, Squirtle, Magikarp, Feebas, Sharpedo, Horsea, Tentacool, Clampearl, Ducklette, Swanna, Wingull, Pelipper, Frillish, Wailmer, Remoraid, Octillery, Mantine, Chinchou
Flying types: Pidgey, Tailow, Murkrow, Fletchling, Zubat, Pidove, Noctowl
Normal types: Rattata, Eevee, Bunnelby, Zangoose, Clefairy, Buneary, Miltank, Tauros
Other types: Ponyta & Torchic (lots of these two), Growlithe, Houndour, Dedenne, Pikachu, Tynamo, Heliptile, Dratini, Seviper, Butterfree, Vivillon, Beautifly, Dustox, Venomoth, Venipede, Heracross, Volcarona, (practically almost all bugs tbh, it would be scary lol), Sunflora, Hoppip, Treecko, Turtwig, Tropius, Roselia, Geodude line, Onix, Ronnergrola (sp?), Swablu, Snivy, Mareep
Ghost types as well but I think those would be almost everywhere too, no ice types that's for sure.
Now these wouldn't be everywhere but I took the whole island & towns in it into consideration so these Pokemon would be scattered in different areas.