The following gods in this list will be determined on 3 things: Ban/Pick%, what they can offer in teamfights, and relative difficulty to play against. High Gold/Low Platinum btw so don't hate me, this is my opinion but I'm welcome to take criticism.
Almost always banned/picked, with great teamfight and high peel with extremely strong frontlining abilities. Gods/Goddesses in this tier are to be respected by the entire enemy team, as these Gods/Goddesses can outright solo squishies, take on multiple foes at once for an extended period of time, engage and disengage efficiently, and own high amounts of strong CC.
Ban/Pick% is high, but relatively easier to pick up. Gods/Goddesses in this tier have high CC, good poke in lane/peel in teamfights and can pilot teams in the late mid/late game. These Gods/Goddesses also have great front-lining and can tank objectives, eat/bait ultimates, and brawl. Gods/Goddesses in this tier should be feared in the right hands, and can be deemed unstoppable.
Ban/Pick% is about medium, so grabbing one of these Gods/Goddesses is almost guaranteed. Peel is high and efficient, and these Gods/Goddesses in this tier are very aggressive who fit into almost any team comp, AKA the "Jacks of all Trades". These Gods/Goddesses are easy to play and can carry in the right hands, however the flaws seem to catch up, such as cooldown times, "being too aggressive can get you killed and ultimately throw the game", and mediocre frontlining if the enemy team is ahead.
Usually never banned or even conceived to be banned/picked early unless the player is ranking them on leaderboards, or has their own tough times against these gods(prepare to get roasted). The Gods/Goddesses in this tier do a solo laner's job better than average with decently well rounded stats across the board. You will feel the flaws of cooldown times or having poor/one trick CC compared to the rest.
Your "Average Joe" pool here. The Gods/Goddesses in this tier are very average, cut 50/50 in terms of good/bad. Average clear, frontlining, CC, teamfight, and difficulty to play against. Obviously there are better choices, however some Gods/Goddesses in this tier have CC others don't, which gives them a little niche in the current metagame.
The Gods/Goddesses in this tier CAN play solo lane and execute it right if played correctly. However, they're better off playing other roles. The Gods/Goddesses here do have high CC and great peel however they have low clear, low tower push, easy to gank via the Jungler, or is a very easy time to lane against, which leads to a snowballing lead by the enemy team.
Loki.. Just don't EVER play him here. You will most likely get roasted and/or reported for playing him. Now I'm not gonna lie, Loki solo in Season 5 was very good. He had amazing split push, his laning phase was extremely frustrating/impossible to push against unless the player had no idea how to play the God, and his rotations after taking tower was basically having a second jungler, who already had more items, gold and damage than your Jungler.
THIS IS NOT THE CASE ANYMORE. His nerf coming into Season 6 was horrendous, to the point of obscurity. Your team will absolutely hate you for playing this heap of garbage. Please, if you want out of your elo, DO NOT PLAY HIM. D O N O T P L A Y H I M ! ! ! ! ! ! ! !
Thank you :)