NaturesAura/src/generated/resources/assets/naturesaura/blockstates/infused_slab.json

{
    "variants": {
        "type=top": {
            "model": "naturesaura:block/infused_slab_top"
        },
        "type=bottom": {
            "model": "naturesaura:block/infused_slab"
        },
        "type=double": {
            "model": "naturesaura:block/infused_slab_double"
        }
    }
}