I came up with 3 mods while looking into the options, so if it can be done for one of them, it's just a matter of copy/pasta to different folders. The mods I found are:

• Nether Foundation

• Nether Metals

• Netherending Ores

Currently any of these mods adds the ores with the vanilla Netherrack background which is just plain ugly, especially if you have Unity's smooth texture around them.

Ignore that. I figured how I can do this mysellf and did it for the Nether Foundation mod.

I didn't think it would be simple, but my OCD forced my hand and I was pleasantly surprised.

Would you like to look at them and decide if you'd like to add them to the pack? This is for MC version 1.12.2. I've attached a screenshot. If you can use them, I can just upload them throught whatever preference you may have

My Nether Foundation Unity attempt.zip
There you go. Try them out

Edit: in that folder there is a copy of the netherrack background I used while doing the edits as background. It is unecessary to exist on that folder and can/should be deleted.

Edit 2: after soime more I decided that default RFtools Dimension shard ores also looked fugly with Unity - so I did them too
Dimension Shard ores.zip

mind uploading these files?

This was the first time I did anything of the sort. Didn't even cross my mind. I was more concerned about the background than anything else. But yeah, yours look a lot better and smoother.

Why did you use vanilla ore textures, and not those that are already in the resource pack?
Top left is mine;
Top right is ur;
Bottom right is Unity;
Bottom left is Vanilla.

So there is my version of nether and end ores created for Netherending Ores in Enigmatica 2 Expert.
And the only problem i faced is sparkles for certus, any tips would be appreciated.

Netherending Ores (Enigmatica 2 Expert).zip

If this mode ever updates past 1.12, we can reopen this suggestion.