I think that's a reasonable distinction between the genres but the boundary can get a bit gray. Two examples:

Bones levels have been a staple of Roguelikes since Nethack, where you can find the area that one of your previous characters died. Usually this means a huge power boost if you can deal with the threat of your ghost and/or whatever killed you.

Angband is an ancient and classic Roguelike but it has a "monster memory" that accumulates the knowledge of the enemies you have fought, both in your current playthrough and all previous playthroughs. This represents a significant assistance as you progress through the game, both because the knowledge that "this beast has killed your ancestor" is a big caution sign, and also that you eventually "know" the stats of all the monsters.