Where are those giveaways coming from?

https://www.steamgifts.com/discussion/7Pd8F/humble-bundle-play-pink-with-twin-sails

https://www.humblebundle.com/games/outright-heroes-film-television

givee.club
ended

Maybe try asking GA creator, all recent seem to be created by same user.

base game+ this DLC(seperate keys) from this bundle

Givee Club

atm Fanatical Winter mystery bundle

https://www.steamgifts.com/discussion/TtO9e/humble-bundle-awesome-games-done-quick-2024

Fanatical Mystery Bundle

Fanatical Winter mystery bundle

Humble choice

https://www.steamgifts.com/discussion/Q7CMB/fanatical-build-your-own-best-of-bento-bundle

also could drop in Fanatical Mystery bundle

probably humble bundle choice, u must redeem keys by Jan 31

https://www.steamgifts.com/discussion/TtO9e/humble-bundle-awesome-games-done-quick-2024-bayonetta-sprawl-astalon-out-of-stock

giveaway dot su

Seems like it's coming from Mystery bundles from Fanatical : https://barter.vg/i/104079/?

definitely mystery bundle, believe its in the uncommon slot so its relatively common.
I am sure many people who win the $2 coupon from fanatical are spinning the 2 copy mystery wheel.
its cheap if your willing to risk resellers. Please don't gamble for it.

Alienware Arena

One more giveaway here :)
https://www.steamgifts.com/giveaway/cgjSg/

Fanatical Mystery Star Bundle or past bundles now

Fanatical: Mystery Star Bundle

or it came from one dollar collection:
https://www.fanatical.com/en/collections/dollar-collections

Gleam giveaway from vLoot

Keyhub

fanatical mystery star bundle
but looks like it might be bugged

If I had to guess, Fanatical Mystery Star Bundle.

mystery bundles, one of the less common results

From this: https://www.steamgifts.com/discussion/j00Mu/freesteam-naruto-to-boruto-shinobi-striker