I noticed that the mod still uses "forge:raw_ores" tag, as well as some older tags for the recipe.
Could you update it to the "forge:raw_materials" tag? As it's the newer updated tag for crafting. This would make things compatible in JEI
https://github.com/klikli-dev/occultism/blob/version/1.20.1/src/main/resources/data/occultism/recipes/crafting/raw_silver_block.json
https://github.com/AlexModGuy/Ice_and_Fire/blob/1.20/src/generated/resources/data/iceandfire/recipes/raw_silver_to_raw_silver_block.json
https://github.com/BluSunrize/ImmersiveEngineering/blob/1.20.1/src/generated/resources/data/immersiveengineering/recipes/crafting/raw_silver_to_raw_block_silver.json

This seems rather odd, because I remembered that someone updated the tags - and indeed silver is tagged as raw_materials/silver

It just also retained the older forge raw_ores tag (it has both)

What I can do is remove the raw_ores tags as that is probably safe now, but not sure if that will solve the issue

Thanks, it fixed.
You did update the Tags on the items. But the recipes were still using the old tags in their files.
Now it's working, thanks.