I've really dug a few of their songs over the past three-four years, but just recently I gave them a proper full discog listen through, so this is my "first impression", but I'm a bit biased towards Coal, Congregation, and Malina since those are the albums I'm most familiar with.. And by a bit biased, I mean very biased. Anyway, I figured this would be fun to do in the meantime anyway.
Leprous
1. Malina
2. Coal
3. The Congregation
4. Tall Poppy Syndrome
5. Bilateral
6. Pitfalls
7. Aphelion
As for RYM's ranking:
1. Bilateral
2. The Congregation
3. Coal
4. Tall Poppy Syndrome
5. Malina
6. Pitfalls
7. Aphelion
What's weird though is Spotify's listening stats don't reflect this at all - their first three albums aren't listened to as much as their four most recent ones which get millions of plays. But I have an obvious agreement with RYM in that I think their metal style is better than their rock/art approach - with Malina being an exception. Maybe Pitfalls and Aphelion will grow on me, I did enjoy a good amount of the songs on them, but the crazy guitar playing from Coal / Congregation is missed... Malina seems to hit a nice middle ground between their two approaches.