Slowpoke
Ash had a double battle against Suwama in the Best Wishes episode number 077, 'Evolution by fire!'.
The only Pokemon out of the three you mentioned to evolve so far is Ash's Tepig. Ash's Tepig evolved into a Pignite in the Best Wishes episode number 077, 'Evolution by Fire!'.
The episode is called "Espeon not included".
Ash receives his Phanpy as an egg, in the episode, Extreme Pokemon!
You must be talking about the episode where ash and tracey get sick from a poisonous Pokemon and that episode is called the stun spore detour
Ash battled Norman in the episode "Balance of Power."
the second episode.
In the episode Trees a Crowd.
episode 56
episode 39.5
It will probably never evolve into emboar because in an upcoming episode pignite is tryin to resist his evolution same with Ash's oshawott and snivy.
Ash meets Riley in the episode "Saving the World from Ruins!" which is the episode no 7 in Pokemon galactic battles.