I have always head-cannoned that the kokiri were an isolated appearance.
They they've only ever been koroks, except for that one time they became a village that raised a hero.
That the Great Deku Tree, surrounded by korok forest children, decided to take in the orphaned infant hylian before him. That he asked the forest spirits to appear as hylian-like children to make Link feel more comfortable and less lonely as he grew up.
(Mido must have missed the memo).
Holy moly, Okay, I finally found the origin of my TLOZ AU idea, it all started with my spooky little skull kid / kokiri (skullori) idea. I imagine after some time there would be blended variations or kokiri would eventually have to be tougher. See that little spike knee bracer? He totally stole it from Ganondorf and is going home to show all of his friends. Then above is some early concept designs for zurudo people (they're so unpolished ;w; ) also I had to sensor my name on these before I did my little MA signature. I hope peeps can trust me on that that these are in fact my drawings and all that but I really didn't want to leave these unshared today <3
(forgive me these are a little older) But further back, still expanding my AU and studying the artstyle for TLOZ Wind Waker. I am particularly proud of the deku tree and the deku mole, two entities sharing one massive, eldrich-like body in order to protect and transport the spirits of the forest above and below the great flood's barrier. I WEAR by all things this was before Tears of the Kingdom and I never thought it would fit SO well with the things that developed in the canon of the game. This was an ongoing idea I had in 2022 and maybe even further back. Enjoy!
If you're interested, I did a speeddraw of this that explains the floor in depth. Part 1 https://youtu.be/84bNQqiwxWU and Part 2 The Depths of Hyrule Part 2of2 Fan Art Speedpaint Expanding on my personal AU where Ganon/the gerudo culture fuses with the abandoned Zora during the great flood, the kokiri have also adapted through the many changes Hyrule has seen.. including not only keeping hylian and human children, but zonai as well. They use the network of the great deku tree and deku mole to go to the surface world forest or the system of caves below the waves to spy on Ganon's activities. I REALLY loved the depths, it's part of my favorite place to explore just for the sake of all the mushrooms and poe and nature! >w< This has been an idea I've been working on for a while.