Its up to you to find that out, and adjust for the metagame you play in
Galadriel, Light of Valinor If you were to look up lists for Galadriel online you would find, unsurprisingly, that the most common archetype for her is elves

Scientists Abandon Attachments Abomination of Gudul Academic Dispute Academy Elite Academy Raider Academy Wall Action News Crew Adventurer's Airship Agna Qel'a Agonasaur Rex Airship Crash Akki Ronin Akoum Flameseeker Akroma's Blessing Akroma's Vengeance All-Seeing Arbiter Altanak, the Thrice-Called Amber Gristle O'Maul Ancestral Reminiscence Ancient Excavation Angel of the God-Pharaoh Angelsong Anje Falkenrath Anje, Maid of Dishonor Anvil of Bogardan April, Reporter of the Weird Arcade Gannon Arcane Subtraction Archfiend of Ifnir Architects of Will Archive Haunt Arm-Mounted Anchor Arterial Alchemy Artful Looter Artificer's Epiphany Artist's Talent Artistic Refusal Ashling, Flame Dancer Ashling, Rekindled Assassin Gauntlet Astonishing Spider-Man Astral Drift Asylum Visitor Atemsis, All-Seeing Atlantean Skirmisher Aura Extraction Avian Oddity Avishkar Raceway Awaken the Honored Dead Axiom Engraver Azra Oddsmaker Backslide Bag Check Bag of Holding Bandit's Talent Banon, the Returners' Leader Bant Sojourners Baral, Chief of Compliance Barkhide Mauler Baron Strucker, HYDRA Overlord Barren Moor Barrier Breach Basri, Tomorrow's Champion Battle of Frost and Fire Battlefield Scavenger Bedlam Reveler Belligerent Guest Bellowing Crier Beneath the Sands Benthic Biomancer Big Score

They'll exile all cards they find in any of the zones
Notably, opponents can't try to remove creature cards from your graveyard to stop you from activating the ability
It still needs human verification because glare from a penny sleeve can make a scanner confuse holo and reverse holo surfaces