Hyolobrika (npub1pqp…e753) kaia (npub1c4s…aqv4) humble started off featuring smaller independent game bundles with no DRM or occasionally with GOG keys.
Now, unless it is specifically a DRM-free bundle, it tends to be through steam. Which is sad.
Go through GOG or itch.io if you are looking for DRM-free. Although, itch has some published that have launchers that connect to itch and use DRM, so be careful