I want to learn the jungle, any champion recommendations ?

I started playing in 2024 and OTP'd Riven up to Emerald; I also played some Vayne ADC—which I quite enjoyed—but the longer I play, the less fun I'm having.

I’m looking for something completely different, keeping in mind that I have very poor map and jungler tracking (I mostly just rely on being an OTP and knowing my matchups inside out).

I like champions that stay relevant throughout the game, no matter what happens. I enjoy OTPing or playing a very small champion pool; if you have any recommendations for learning jungle fundamentals, I’m all ears!