Found by That1MiningGuy These are datamined, These can change anytime. keep in mind.
Crypto the Surveillance Expert:
Surveillance Drone: Deploy an Aerial Camera Drone. 10 second cooldown if destroyed. // Max 200m distance.
Drone EMP: Charge up an EMP blast from your drone. Deals Shield Damage, slows enemies, and disables traps.
Neurolink: Crypto and his teammates see what his Surveillance Drone detects up to 30m distance.
Extra: Surveillance Drones can open doors, supply bins, and pick up dead teammate banner.
Blackout/Revenant the Nightmare Simulacrum:
Mark for Death: Fires a poison dagger. Press again to reveal the target's location for 60 seconds.
(If enemy is marked a message will tell them "Something is watching you.")
Poison Bomb: Launch a Poison Bomb. Damages and slows targets hit.
Infiltrator: You crouch walk faster and climb walls higher.
Shadow Walk: Move silently and faster for 6 seconds. Cooldown resets on kill.
Shadow Step: Send out a Shadow Revenant. Press again to teleport to the shadow. Cooldown resets to kill.
Proximity Dart
Silence: Throw a device that disables enemy tactical abilities for 10 seconds.
Death Recall: Drop a totem that protects anyone who uses it from death.
Extra: Can enter and exit Shadow Form.
Skunner the Crafty Trapper:
Debris Trap: Drop a pile of debris that slows and damages enemies which they move through it.
Schiltrom Barrier Grenade: Instantly create a spiked barrier.
Light Step: You are not slowed by debris traps and do not leave traversal evidence for trackers.
Jericho The Frontline:
Ballistic Shield: A full-body shield that protects you from incoming fire.
Shield-Breaker Javelins: Throw two electrically-charged javelins that burns through enemy body shields.
On Your Six: Your ballistic shield protects your back when you are not actively using it.
Prophet/Seer the Scout Sniper:
Spotter Sight: Seer scans the environment and gathers information on targets found.
Triple Tap: Seer equips a silenced Sniper Rifle with three shots.
Sniper Training: Seer has improved accuracy while ADS and starts the game with a scope.
Rose/Loba the Translocating Thief:
Burglar's Best Friend: Throw a disc and teleport to that location.
Supply for Demand: Hold %offhand1% to choose a type of loot. Reveal that type of loot around you through walls.
Black Market Boutique: Place a device that can steal all nearby loot.
Eye for Quality: Loba can see nearby loot through walls and can open up hidden compartments in loot bins.
Extra: Loot Category;Weapons, Armor, Health & Shields, Attachments, Backpacks, and Ammo & Ordnance.
Blisk the Elite Mercenary:
Throwing Knife: Deals 20 damage and marks the target. Killing a marked target rewards double credits.
Payday: Squad kills award credits. Spend credits on powerful supplies.
Bounty Reward: Spend to select rewards? Idk.
Interrogation: Executing an enemy will reveal the location of their allies for 10 seconds.
Extra: I don't know about this one, but it's in the game files…
Nomad the Field Crafter:
Loot Compass: Follow the Loot Compass to the nearest item.
Crafting Table: Place a crafting table down. Scrap salvageable material and purchase items.
Packmule: Nomad and his teammates have additional backpack space.
Downfall the Populist Pyromaniac:
Fire Sale: Drop a box of 4 molotovs anyone in your squad can pickup and throw.
Reign of Fire: Fire a cascade of incendiary rockets.
Burning Anger: Dealing damage builds rage. Filling your rage makes you immune to fire for 20 seconds.
Molotov Cocktail: Throw a fire bomb that sets enemies on fire.
Husaria the Hard Breacher:
Flashbang: Throw a grenade that briefly blinds and deafens opponents.
Concussive Breaching Charge: Plant a breaching charge that fires a sonic wave through walls to destroy traps, force open doors, and disorient enemies.
Shotgun Kick: A Breaching Shotgun on your calf that discharges when you melee doors or enemies. Requires shotgun ammo.
Immortal the Shield Support:
Shield Charger: Unleash a cloud of nanites to charge your teams shields.
Rise of the Phoenix: Restores your health and shields to full and gives nearby teammates 30 seconds of self-revive. Takes 8 seconds to charge.
Hard to Kill: When you get downed you can revive yourself.
Shield Teardowns: Hit a target with a cloud of nanites to kill their shields for a short period of time.
Rampart the Base of Fire:
Amped Cover: Build cover that provides a damage boost to anyone standing behind it.
My Friend Maxim: Place a mounted machine gun that anyone in the squad can use. Uses Heavy Ammo.
Fixer: Swapping to melee equips a wrench you can use to repair structures.
Cover Fire: Firing from cover overcharges your gun damage.
Gunner: LMGs have increased magazine capacity and reload faster.
Extra: Can pick up cover and move it.
Valk the Soaring Aviator:
VTOL Jets: Hold to Hover.
Skyward: You and nearby allies take to the skies after a short cooldown.
Afterburners: After the initial drop, Valk and her teammates fly faster while skydiving.
Source: https://www.reddit.com/r/apexlegends/comments/cq5hdm/all_new_datamined_legend_info_all_legends_were/