How to decide which champion to otp.

Hello,

I have mailed Zac for most of my time playing league now. I knew, that jungle was my role early on. I looked for Junglers and since I had a slime skin in Minecraft I just tried out Zac for fun and it turned out I really like his playstyle. My problem right now ist, that

1. I can’t play other champions since no one matches Zac‘s sustain
2. He does not support a variety of stats and is easily counterpicked.

I don’t care about counterpicks that much since I can play around my teammates as a jungler, especially a tank but some matchups are still disgusting.

But the biggest Problem is:

I found myself to be really interested in theory crafting builds/strategies, do maths on most effective stat distribution, … Most of those things cannot be applied to Zac tho. I can only build from a selection of 10 Items. I can take 2 runepages. It’s not that I want multiple builds to be equally effective but rather more to be viable.

Something that would fix my problem would be mailing a champ that plays similarly to Zac while also being able to build a large variety of items. There are some requirements tho:

• I don’t want the champ to be overly simple as being an otp will not grant me any micro advantage
• The champion needs to not be snowball reliant as theorycrafting doesn’t matter as long as you either stomp or hard lose.