Choose my new main. PLEASE HELP

Recently I have been struggling to find a champion that I enjoy playing consistently. And when I am in champ select. I struggle to even pick a champion at all because skimming over the champions I dont see anything truly interesting. So I am here on the quest to discover my new champion. Currently I am sitting at these 4 champions in mind. I will state what I like about them and what I dont like about them. And you guys can tell me which you think would best fit. Realistically though, you can make your own suggestions. I want to be able to climb with this champion but also be able to have a good time playing him/her. Okay here goes.

1. Jhin - The Virtuoso. Being totally honest. Over time I have grown to have over 110k mastery on Jhin. But never at any point did I really "main" him. I love his as a character. I find him interesting and also very enjoyable theme wise. Kit wise I think he is very unique and powerful. The issue I have with him is he is in the position of ADC. And while I have nothing against ADC's I fear that due to the upcoming uprising of the returning tank meta. I am afraid. Adc will again be an overall poor role. Maybe you can all convince me otherwise?

2. Aurelion Sol - The Starforger. Mr. Star Dragon is a champion that I dabbled in. Never put a whole lot of work into him. But definitely found him to be interesting. When it comes to mages I do think Battle Mages are probably my favorite. He fits the bill. Not to mention he does a deceivingly large amount of damage for a champion that relies on his passive to do almost all of his damage. Character wise I think Sol is absolutely fantastic. Essentially a Sassy god that likes to meddle in the affairs of mere mortals for fun. My only fear is that I think I would probably end up playing him mostly top. And through a decent amount of research I am struggling to find any information about whether thats even a a good option.

3. Vel'koz - The Flying Spaghetti mons... cough cough The eye of the void - Vel'koz is actually a good contender here. He has a huge amount of damage and true damage at that. Not to mention the range and cool snipes you can do with his Q and the split off it has. His ult just looks powerful as he shoots a massive f*king laser beam down the lane melting enemies. I also like that he can be played in multiple roles. allowing me to fit into different team comps and have more flexibility. To be honest my issue with him is my lack of knowledge about what to build and his various build paths depending on the enemy team comp. And as we all know "Knowledge through... disintegration."

4. Mordekaiser - The Iron Revenent (AKA: DID SOMEBODY SAY MALICIOUS METAL?) Although I haven't played much Morde in my time playing league. I've always had a decent amount of success when I did play him. I always seemed to win lane. Seemed to delete people late. Even got a few quadras and a penta with the old master of metal. But I have never gone into a game thinking "I wanna play Morde" hes always been a last second lock in because i couldnt decide which jgler or top laner to pick. He seems interesting. and has a BOAT LOAD of damage. But Im sure there are some glaring weaknesses that I dont totally understand. Otherwise why else would he be played so little?

So that is my list so far. Hopefully all of you guys can help me out on this and figure out what I should do. Thanks in advance. If you have any questions about my playstyle or anything relevant to helping me choose feel free to ask.