I was thinking about this but then I decided to make emissive texture for only ores. You can simply add the block texture to the assets > minecraft > textures > block > (here). Then you should add " _e " to the end of the file name. Like if It's diamond_block.png, It should be diamond_block_e.png. Then diamond block will be emissive. If you can't make it, message me and I'll make it for you.

Okay, hear me out... I went to a different location the moment I commented (I teleported to that location) and the texture pack suddenly works perfectly! Idk if that was a bug or it wasn't loaded properly... But I just wanna say it works amazingly!! Also man thank you for the work... I've downloaded the Mobs one, the random stuff that spawns on grass, skeletons heads in caves, the sky... They are all actually wondeful! thanks man! (Also, I don't usually like Texture packs, I really prefer simple ones. But these ones are just like add-ons on Minecraft just to make it THAT much beautiful!! I would really recommend them)

Yes, It's for 1.18.1 Optifine