Yes and no. After all, these are just modes using Keccak (think, say, AES-CBC, AES-GCM all use AES), so the choice depends more on the purpose than anything els

Yes and no. After all, these are just modes using Keccak (think, say, AES-CBC, AES-GCM all use AES), so the choice depends more on the purpose than anything else. But indeed, the naming is confusing. Instead of SHA3-256, SHAKE256, KMAC256 and ParallelHash256, maybe they should have better named them SHA-3-hash256, SHA-3-xof256, SHA-3-mac256 and SHA-3-parallel256 (or so).