No Quake was a real level up from Doom, at least graphics wise.
Though I actually preferred the sprite graphics for smaller monsters, what I reckon would have been cool is if we could have a retro reboot of Doom 2 but with Quake style 3d monsters for mini bosses, and a whole Hexen remix/mashup but with UT style grenades and low gravity jumps and stuff
If you call the whole genre doom clones then that means Doom is a doom clone. Kind of like the problem with 'Souls-like' games. Also calling them clones somewhat diminishes the accomplishments and inmovations of the devs within the genre.
Also some people would add not having upgrades or unlocks of any kind that persist between runs for a game to be considered a true roguelike, the idea being it's you the player who learns and gets better to eventually be able to beat the game, and not because you failed 50 runs to eventually unlock enough hp and damage upgrades.
Which is why the "correct" term for most of the games is roguelite and not -like.
Yup, that's what I mean by permadeath, you start each run from scratch, though you may unlock access to content (i.e. open a new area, unlock a class, etc) that the next play through can access.
Maybe Doom-like is better, since "clone" implies they didn't add anything. It has worked really well for rogue-like, and souls-like has also evolved a bit to not just be "like dark souls," but any game with a focus on hard boss fights.