This tierlist is based on my expectations about how the patch notes will affect the meta.
There are several things that I have taken into account, early, mid, late game, wave clear, teamfight potential, etc etc...
For me, the most important thing that makes a god better than another is their teamfight potential towards mid-late game (which is basically where real fights start to happen, either around gold or fire, atleast in rankeds) and this is what makes Cthulu for me the best solo laner in the game. Why? Because as Cthulu, if you have a jungler that secures your blues and you are more or less with the same farm that the enemy solo has, you will be extremely better in teamfights, just bc you dmg everyone in their team and heal all of your allies as well, and specially when you get Axe in late game, you just do way too much dmg. Also, what really makes me think that he is going to be the best is because sunder got nerfed again (massive nerf btw) and bulwark is probably going to be broken with him.
With all of this being said, it doesn't mean that Cthulu is SS, there are ways to counter him, specially walls or gods with high scape ability.
Jormungandr gets a high upgrade and probably reaches ban material (not first ban, but if you want to ban sololaners this might be the first that would come to your mind along with Cthulu). They just buffed Jade Emperors, his breath, his 1 and his 2, not to mention all of the previous buffs that he got these last patchs notes.
The buffs to bumbas and stone of fal might be very good for a few gods, specially Hades and Athena
Artio, even with the buff, is the only one that im not sure. When they buffed vampiric and blood soaked, I though she would be op but idk I just feel that she lacks dmg. He surely constantly pokes but her dmg doesn't really feel like a threat compared to the dmg of other guardians/mages. I surely bet that she is going to be very strong but as I said, idk.
The rest havent changed that much tbh.
*Odin: Tbh I would place him in A as I usually do but most people consider him ban material. I just think people lack personality and just follow what SPL players do. I think he is strong but just in some situations, I dont see the reason to pick Odin if its not to cage people or to counter healing. Btw, Jorm is his counter and he got huge buffs.
*Nike: Altho most people thinks she is garbage bc of sunder, I think the opposite. Before, you needed just 1 sunder to break his ult completely now you need 2 and these got nerfed again and even if they break your ult, you now have access to another shell, bulwark.
*Gilgamesh: He might be banned every game but I think he is a jungler more than a sololaner, he can do well in solo too tho, but not broken.
*Osiris: Ye ye, Osiris has been picked a lot lately and I place him in A- , I'm sorry you wont change my mind. Everytime Ive been against a solo Osiris, I've won the game. He is just so easy to kill even if he ults away he is so easily followed and his dmg is not a threat unless he builds animosity and thats not until lvl 17 and that doesnt change the fact that he is easily killed. I would agree that he could be a great jungler but I just don't see him doing good in solo atleast not in a very long time.
-Totally Broken. Picking gods on this tier would reward you with really high chances of winning.
-Best gods right here.
- Gods that are really strong and should be taken into consideration if S+ are banned. (might be 2nd picks/bans)
-Mostly your meta picks.
-Some of these gods may have more or less the same potential that S- picks have, but seemes a bit weaker. Some kinda can't be on/against any comp
- Average. These gods are 'balanced', or situational. They may seem to be powerful against some gods of higher tier or at some point of the game, but doesn't mean they are as good as that every single game. or during the whole game.
Not Bad, but not good either. These gods can be picked, but it's risky. Some are not that hard to counter.
- Bad. I don't think these gods should win a single game if you are facing a good enemy team.