So any avid builders, how can i make a more nonstandard team successful. By nonstandard I'm not saying F.E.A.R or any other stupid gimmicks, I am instead referring to the use of more off meta B or C picks in between the more meta mons.
To me, every pokemon can be used in every tier higher than its own. A good exemple is poliwrath, which is classified PU but has been used by many players in OU with success due to 90+ hp/def/spdef stats and great typing. So we have pokemons with big defensive stats that aren't used because they simply don't threaten the opponent (avalugg/poliwrath). Others have a "poor typing": bulky psychic types would be far better if U-turn wasn't bug-type and pursuit/knock off dark-type.
Then, some pokemons are very, very powerful, but are either slow or too frail. I have a joke: imagine typhlosion PU. It makes no sense, it has specs eruption, it's like a charizardY cmon! Well, it's not a joke. It is PU, even though it is faster than most PU/RU/UU/OU attackers. It just has 0 bulk and little coverage. But don't say typhlosion PU=typhlosion bad. If you face it in OU, I'm curious to see if you have a safe switchin to it. Charizard has risen to topOU thanks to a boost in spA and drought, tho the regular form is PU. So the frontier between tiers is tiny, very tiny and little changes brings poor mons like PU-mantine to big threats (roost wall mantine).
As
Spoons of Justice and
OrangeGuru (thank you both!) said, you must find a NICHE: a pokemon is indeed in a low tier because it is either "bad" (luvdisc), bad meaning 0 good stat and/or no movepool (but what I called "bad" mons should never be used because it makes no sense), or because it is OUTSHONE by another (arcanine vs heatran). But choose a pokemon you like, check its stats, and look for moves/abilities that its rival doesn't have: intimidate arcanine has morning sun in addition, contrary to heatran that can't heal and take physical hits. If you find all the little things that make your pokemon unique in a given tier, you can start building around it.
You will realise you are mistaken if you build only in a way to support your pokemon and that you keep thinking: 'god I just want to replace this by a heatran'. If switching mons doesn't affect the team you built, then something is wrong because you are actually trying to put a C-D or E ranked mon in a slot that a A rank can do as well. Your pokemon must do something, provide a little but unique contribution to your team (my pachirisu volt absorb+superfang, abomasnow's hail).
Your team may not be great and you may be tempted to give up very quickly. I'll tell you something: I have got a lot of experience building around what other people call "bad mons" but that have nonetheless a niche. I worked on my favourite teams and got to the topladder with stuff like pachirisu, and I have my RMTs to show to everybody that you can be creative and play whatever you want if you get to understand the mechanisms and meanings hidden behind tiers, rankings and generally, metagames.