This resource pack is designed for the modpack BaerCraft, but anyone is free to use this as it’s purpose is to completely redesign Minecraft’s default GUIs.
Additionally, this will have a ton of support for other mods in the near future!
BaerCraft has over 200 mods, so there will be a ton of GUIs and mod support added over time. Some of the mod support currently being worked on:
JEI
Thermal Series
Ice and Fire
Iron Chests
Immersive Engineering
Builders Crafts and Additions
Create
Cosmetic Armor Reworked
Flux Networks
Iron Shulker Boxes
Mr. Crayfish Furniture Mod
…and heaps more!
You can check out all the mods that will have a GUI overhaul here (mod list is at the bottom of the page): https://www.curseforge.com/minecraft/modpacks/baercraft
Thanks to milesdemillas for allowing me use textures from Enhacned Hub