>>33281361Mareep is pretty much your bread and butter electric type and once it's Ampharos you can steamroll most of E4 with that mofugga.
Mudlord and Noctowl perform well
Victreebel and Arbok for taking care of status effects and weakening mons so you can catch them.
Heracross is pretty fucking strong if you need a fighting type and bug type.
forget about Yanma and Dunsparce. it will take ages until you find them.
replace Noctowl later on with Skarmory because that thing is only late game available.
also, Red Gyarados is a tank.
as a starter it really doesn't matter if you have Typhlosion or Feraligatr. Both are the same quality choice. Meganium not all that much but it works.