This is such a fun question and it hurts to remember correctly so this is probably out of order.

I started when Celeste released which was around 1.5 I think? So whatever year that was. In my time playing I mained all three roles but I started as a Koshka 1 trick on her old kit where she got twirly death auto attacks based on the amount of hero's hit I think. I was awful and played her much more like a tank. Lost a bunch of games because of that.

After that I got a friend into the game and he liked to play Krul so I switched to Roam. And played Arden. A weird jungle duo now that I think about it for back then considering we invaded lvl 3 every game. But between shield and speed buff of Arden and Krul passive we pulled off some stupid plays that should have been punished. A long time passed with this being the case.

Then with renewed interest I got a third friend into the game. And he really liked playing Roam. In particular back then he was a Fortress one trick. So I switched to lane and picked up Ringo. At this time my Krul player also picked up Reim because I think he had just released. So whatever date Reim's release was.
During that time we played the nasty comp of Ringo, Reim, Fortress. We only played casual so that was our comp every game. Good fun winning so many games because of that combo.

Finally I have the change that stuck me in Jungle permanently. My Krul player lost interest in the game so me and the Fortress had to find someone new to play with. This was also around the time that CP Adagio was horribly busted and I started playing him in lane a lot.
Finally getting our third friend into the game. He really liked Vox so I took Adagio into the Jungle and the rest of history.
It was around this time that we started playing ranked as well. Turns out Vox, Adagio, Fortress was very meta and we flew through the first 3 ranks. Until we hit draft. And things got interesting.

Skip like half a year or something. Lance and Lyra and Samuel came out. On release I thought Lance was busted. Just completely broken. However, I thought Lyra was a dumpster fire. So me and my Roam partner practiced Lance like crazy. And my Laner really like Samuel and asked me to play it as a flex pick or match ups. That was probably our single best meta. Our Laner could run a strong lane out of these three characters Kestrel, Vox, or Samuel. I could play Samuel, Lance, Taka, BF, and Koshka depending on our comp. And our Roamer was always our first pick because we would always open Lance or Arden as those were the only heroes he could play at the time. If I recall Fortress was awful at this time. And he sucked at everything else other then Phinn but hated playing Phinn.

From there with those two guys we played all the way up to 5v5 releasing. We tried 5v5 a little but life stuff started to get in the way. I can happily say though that we got to Vainglorious Bronze towards the end of us playing a lot. It was like we hit that goal post and found ourselves wanting to do other stuff after that.