I feel like Ekko jungle could be more consistent.
I love playing Ekko jungle, mostly because he's just my favorite champ. I know that Ekko wasn't necessarily intended to be a jungler, but I feel like he should be doing better. I don't have any concrete evidence to base my argument on, but I encourage you to try out Ekko jungle and see how it goes. It will probably end with the enemy jungler constantly invading you, out farming you, and out ganking you. Yes, he got a passive buff that does extra damage to monsters, but I don't feel like it's enough to make him viable in ranked. Just my opinions.
Thank you very much for your time.