I see there are video guides for Any%, but are there written ones anywhere on the internet?

Here's some notes I prepared tu learn the current route. No specifics like dungeon routes but should help you get started.

Start Save at house WV Kak WV PGS, DM WV, deathwarp[10R] Rent TRod, then Bow [0R] Sanct [50R] Rent Hammer [0R] 20x5 before Eastern [100R] Eastern (rupees on floor, fairies, escape) [370R]

Rent bombs [320R] Witch WV Trigger Shady Guy Fly to Kak, Smooth Gem, house 100, boots [220R] Flippers Get water red [240R, need 10 more from drops before Hyrule Castle] Fly to house Gales

Fly to DM Hera road Hera (Can skip HC)

Fly to Kak MS Fly to house Rent FRod, Hook, IRod + get QE [-250R, no more rupees needed] Castle Lorule

Blacksmith WV Go to abandoned house, enter portal Rocky area portal Maze skip Dark

Dash out to left FRod boost to ledge Animation storage Turtle

Fly to Blacksmith Steal big bomb Open Swamp Swamp

NW portal Desert portal Desert skip(DDPS, DPS, whatever)

Activate Mire WV Enter N portal Fly to DM FRod Rocko Mine and Hilda text skip Climb cave Ice

Fly to Mire, enter N portal Fly to Kak, portal behind Sahasrahla Skull

Fly to Blacksmith Thief password is 231 Thieves

Dash to castle Trials Skip Yuganon Win