1- The "Excalibur_Create_Stones-addon" works well with the Create addon provided by the official "Excalibur Mod Support" resourcepack. Depending on your taste, if you like more the natural stone provided by this addon, put this above "Excalibur Mod Support" otherwise put it below.

2- I included an overlay system for all the Brick variants and the Stone block (optifine, connectedness, continuity ...) if these additions do not interest you, delete the "optifine" folder in the "mincecraft" folder in this addon.