Rt. 101: Lilllipup Lv. 2, Zorua Lv. 2, Sewaddle Lv. 2
Rt. 102: Lillipup Lv. 3, Gothita Lv. 3 (probably version exclusive with Solosis), Tympole Lv. 3
Rt. 103: Lillipup Lv. 3, Chatot Lv. 3, Shellos-1 Lv. 3(as far as which form, I'm guessing since West Sea was in XY, it could be East Sea)
Rt. 104: Pidove Lv. 7, Sewaddle Lv. 7, Chatot Lv. 7
Petalburg Woods: Cottonee Lv. 6 (not version exclusive since Petilil can be found in a Mirage Spot/post game island you access by Soaring), Paras Lv. 6, Phantump Lv. 6
Rt. 116: Pidove Lv. 8, Joltik Lv. 8, Eevee Lv. 8
Rt. 105-109: Frillish Lv. 25, Clauncher Lv. 25 (could possibly be version exclusive with Skrelp), Krabby Lv. 25
Granite Cave: Timburr Lv. 12, Axew Lv. 12, Onix Lv. 12
Rt. 110: Trubbish Lv. 13, Chatot Lv. 13, Shellos-1 Lv. 13
Rt. 117: Rattata Lv. 14, Deerling Lv. 14 (no idea how Deerling's forms are handled), Tympole Lv. 14
Rt. 111: Sandile Lv. 23, Dwebble Lv. 23, Gible Lv. 23
Rt. 112: Ponyta Lv. 16, Sawk Lv. 16 (probably version exclusive with Throh), Tyrogue Lv. 16
Fiery Path: Roggenrola Lv. 15, Diglett Lv. 15, Tyrogue Lv. 15
Rt. 113: Scraggy Lv. 18, Klefki Lv. 18, Bouffalant Lv. 18
Rt. 114: Skorupi Lv. 19, Misdreavus Lv. 19, Tympole Lv. 19
Meteor Falls 1F: Deino Lv. 19, Druddigon Lv. 19, Clefairy Lv. 19
Meteor Falls 2F & B1F: Deino Lv. 40, Druddigon Lv. 40, Clefairy Lv. 40
Rt. 115: Pidove Lv. 20, Misdreavus Lv. 20, Clefairy Lv. 20
Jagged Pass: Ponyta Lv. 21, Mankey Lv. 21, Tyrogue Lv. 21
Rt. 118: Raticate Lv. 24, Luxio Lv. 24, Aipom Lv. 24
Rt. 121: Elgyem Lv. 30, Hypno Lv. 30, Aipom Lv. 30
Safari Zone: Kakuna Lv. 30, Pidgeotto Lv. 30, Buneary Lv. 30
Rt. 122: Frillish Lv. 25, Finneon Lv. 25, Alomomola Lv. 25
Mt. Pyre: Elgyem Lv. 31, Bronzor Lv. 31, Growlithe Lv. 31
Rt. 124: Frillish Lv. 30, Finneon Lv. 30, Alomomola Lv. 30
Rt. 125: Frillish Lv. 30, Finneon Lv. 30, Seel Lv. 30
Rt. 126-134: Frillish Lv. 30, Finneon Lv. 30, Alomomola Lv. 30
Shoal Cave: Cubchoo Lv. 34, Delibird Lv. 34, Dewgong Lv. 34