>>46918029Meganium should either get Flower Veil or Triage, or buff Leaf Guard so that its partner gets benefits too.
Feriligatr is already good, it needs a few things to be useable in the currently powercrept meta.
Typhlosion really isn't good at all. Eruption is a good move but that's literally the only thing it can do, and any priority move, entry hazard, Flash Fire, Thick Fat, or bulky water, dragon, rock type completely invalidates it. Also it has to compete directly with Charizard because Game Freak though it's be funny to give them the exact same Base Stats, but only Zard gets to have a special movepool. There's a reason why Typhlosion's Smogon Page is Cursed.
Suggestions for Moveset Buffs
Meganium
Stun Spore
Sleep Powder
Rage Powder
Helping Hand
Strength Sap
Calm Mind
Growth
Pollen Puff
Body Press
Dragon Pulse
Weather Ball
Rock Slide
Terrain Pulse
Life Dew
Breaking Swipe
Earth Power (might not be necessary with the other stuff but Venusaur gets it)
Typhlosion
Hone Claws
Swords Dance
Nasty Plot
Agility
Snarl
Earth Power
Scorching Sands
Hyper Voice and/or Boomburst (BB might be too strong with the other boosts though)
Ancient Power
Stealth Rock
Morning Sun
Mystical Fire
Scald (More Fire types apparently get it in Gen VIII Though honestly, isn't necessary if it got the other buffs listed)
Electro-Ball (A complete stretch but it already gets Rollout and Gyro Ball, at least give a Ball move that it can actually use).
Feraligatr
Flip Turn
Close Combat
Psychic Fangs
Scale Scot
Breaking Swipe
Thunder Fang ( Not really necessary with the other buffs, but it'd be nice to BTFO out of Gyarados. Also if that can get Power Whip, Feraligatr should get something. Plus Alligator Clamps are a thing)