So here's my first glance thoughts of your team
rapidash:flare blitz is a good move but you need more than just fire coverage, you should add some other moves that add to your type coverage though i cant recommend much as i've never used one
noivern; you should get rid of cut as soon as possible and through the move relearner you can get some dragon stab on it
lumineon:I have no idea how to make one of these good sorry, dive is not a good move though so you should really get a hm slave
venusaur;again with the hm's though strength is a decent one, some poison stab would help with those fairy pokemon,
pangoro: replace sky uppercut with brick break for sure
donphan: ugh the tm's, i'm not a fan of giga impact either because of the rest turn and assurance is also a very weak move