Keep in mind except for Bug -> Normal, the Johto gyms have a type advantage over the next gym you face.
Random pulled out of my ass odds for Gym Leader TMs:
Falkner - Roost 60%, Pluck 25%, Aerial Ace 15% (because Bugsy has to be something of a challenge, right? Pluck and AA have the exact same power)
Bugsy - U-Turn 70%, X-Scissor 30% (not many options)
Whitney - Attract 90%, all other Normal moves 10%
Morty - Shadow Ball 60%, Shadow Claw 40% (These last two stay the same, but I give better odds to Shadow Claw showing up because Shadow Ball was a Game Corner TM in FR/LG and might stay that for these games).
Chuck - Focus Blast 45%. Focus Punch 35%, Brick Break 20%, Bulk Up 10% (Like picking a NFL game with a point spread of 3, I got no clue)
Jasmine - Iron Tail 70%, Flash Cannon 30% (The Gym Leader's TM should benefit their trademark Pokemon, and Steelix has no business with Flash Cannon).
Pryce - Avalanche 50%, Hail 50% (I understand the Avalanche love, but I can't help but think they'd want to make things more difficult for...)
Clair - Dragon Pulse 80%, Dragon Claw 20% (The spiritual successor to Dragonbreath)
Random pulled out of my ass odds for Gym Leader TMs:
Falkner - Roost 60%, Pluck 25%, Aerial Ace 15% (because Bugsy has to be something of a challenge, right? Pluck and AA have the exact same power)
Bugsy - U-Turn 70%, X-Scissor 30% (not many options)
Whitney - Attract 90%, all other Normal moves 10%
Morty - Shadow Ball 60%, Shadow Claw 40% (These last two stay the same, but I give better odds to Shadow Claw showing up because Shadow Ball was a Game Corner TM in FR/LG and might stay that for these games).
Chuck - Focus Blast 45%. Focus Punch 35%, Brick Break 20%, Bulk Up 10% (Like picking a NFL game with a point spread of 3, I got no clue)
Jasmine - Iron Tail 70%, Flash Cannon 30% (The Gym Leader's TM should benefit their trademark Pokemon, and Steelix has no business with Flash Cannon).
Pryce - Avalanche 50%, Hail 50% (I understand the Avalanche love, but I can't help but think they'd want to make things more difficult for...)
Clair - Dragon Pulse 80%, Dragon Claw 20% (The spiritual successor to Dragonbreath)