What igneous rocks are porphyritic?
Any rock that has a porphyritic texture.
A porphyritic texture is one that is characterised by large crystals (phenocrysts) in a finer groundmass (aphanitic part).
So, many rocks are porphyritic: andesite, granite and even some basalts.
There is even a rock known as a porphyry which is an ore-hosting rock that got its name simply from the fact it was porphyritic!
So remember a porphyritic rock is one with a porphyritic texture (large crystals in a finer groundmass).