Champion pool for jungle riven main

Hello everyone,

Riven was a champion I always thought seems fun, but as a jungle main I never really had a reason to learn her. Now since her clear has been improved I'm thinking of maining her for the upcomming season. Not only does she seem strong, but she also seems to be a very safe blind pick (after all as a jungler I usually pick 1st or 2nd) with her mobility and some cc.

Having said that, what would be 2-3 other champions that are worth to learn and play well as a riven otp? So a champion or two I pick whenever enemy picks riven first and another champion or two I pick when the very rare thing happens and I pick late into the draft after seeing that the draft heavily works against riven. What even is a draft that is bad for riven?

One bonus condition is I'll be playing a lot of duos with a morde otp friend, so I kinda want some engage and/or cc since my top already won't have any and I don't really want to always rely on the support pick for that. Aspecially since we're hardstuck p4 (peak d4 and d2 respecitively) scrubs, so I expect no communication in champ select. For the same reason I probably want to always go ad jungle, since I know my top will almost always be ap.