I've been looking around for the mod that has these buttons when you open chests...
PLEASE TELL ME WHAT THE MOD IS CALLED!
Unfortunately it was only updated to Minecraft 1.12, so you'll have to find alternatives if you plan on using something like it.
For newer version, modpack creators now often use
Inventory Tweaks Renewed: https://www.curseforge.com/minecraft/mc-mods/inventory-tweaks-renewed
THANK YOU BOTH, THIS BOTHERED ME FOR A LONG TIME!!!