Checking the evidence…Reading the prices…Writing the verdict…
Developers
id Software
4 games in the catalogue.
QuakeBuy on sale$9.99
Regular price; it has been much cheaper
96% positive on Steam
DOOMBuy on sale$19.99
Regular price; it has been much cheaper
95% positive on Steam
DOOM EternalBuy on sale$29.99
Regular price; it has been much cheaper
91% positive on Steam
DOOM: The Dark AgesBuy on sale$49.99
Regular price; it has been much cheaper
88% positive on Steam
Best verdict first. The developer name is taken from the Steam page, so a studio that publishes under two names may appear twice.