The Jund list is the most solid right now because it has a real easy replacement for Looting in targeted discard spells like Inquisition of Kozilek, Thoughtseize, and Collective Brutality, a switch that many decks were already employing once Wrenn and Six was printed. I'd say this is the deck to play for now because it isn't really affected by the looting ban and it's more traditional than weird RG lists testing out cards like Magmatic Insight which have big downsides.
That being said, you can go even deeper into the individual card choices for each archetype and the deckbuilding gets deeper. Right now I'm on Pox Loam, an archetype that looks like this:
There are a lot of one ofs and weird numbers in this list, but let me run through some of the card choices real quick, and you'll see why I use it for my metagame.
My lgs is pretty large, like 60-70 person FNM each week with a pretty diverse set of decks. The most prominent decks however are creature-based strategies like Humans, Spirits, Company, Vizier Combo, Infect, and Bogles. Aside from that, there are a bunch of UW players alongside random UB or Grixis control strategies.
Smallpox is really good at decimating these decks that are trying to curve out on creatures. If I cast Pox turn two on the draw against a Storm player who went t2 land land Baral, casting a Smallpox puts them behind on threats, behind on mana, and behind on cards while we can discard any land and sac a land with Loam or Wrenn to get them back. The effect in this deck is symmetrical in the short term, but by one or two turns later, we're back ahead on cards and, in a weird way, tempo.
To quickly delve into the other parts of the deck...the manabase aims to get double black on turn two every time, and since Seismic Assault is only the late game plan and a 3 of, we don't have to worry too much about t3 RRR every time and we can focus on just casting pox and moving from there. I'm playing 6 fetches because I think that's a good number with all the extra cycling lands and other stuff we have to find spots for, and Polluted Delta is only in the list because I traded away a Bloodstained Mire plus some other cards for a Wrenn and Six. Either way, the important part is that you have a few black fetches to fetch basic swamp when you need to.
Now if your meta was more combo based with decks like Ad Nauseum, Storm, Valakut, or any "critical mass" deck like Burn or Mill, you might want to cut Smallpox and play something with more discard spells and Liliana of the Veil. Raven's Crime is a hoser against any midrange deck or combo deck - when you can have cast 3 discard spells by turn 3, you really can ruin someone's day. With 9-10 discard spells plus Liliana of the Veil, you can play the gameplan of strip all of your resources, then use AssaultLoam to finish off the board then your opponent. This strategy can be kind of slow vs a Burn deck, but usually to combat that you play extra maindeck copies of Collective Brutality and bigger threats like Tarmogoyf, which you can't play in Pox since you have to sac a creature to the namesake card.
I haven't built one of those decks post looting ban, but if you think that's better for your metagame, I can help you build something in that shape.
RG is typically better against aggro in the sense that it deals less damage to itself because of its lands. In the past, the only thing the deck had to do on t1 was play Looting or "bolt the birds," but now the biggest t1 play is gone so we have to find something else to fill its slot. Because of this, for the moment I would stay away from RG and look at something more set in stone that has stood the test of time in Jund Loam, which is the deck that won a GP to put this deck on the map years ago, and is stronger than ever with cycling lands and Wrenn and Six to power it out into the late game.
TL;DR - I think some version of Jund Loam is the best choice right now because the other colors need to replace looting somehow. Let me know what your metagame is like and I can help you find a good list for you.