Up until most dealerships current Hyundai 0w30 oil labeling arrived, they had a broad, almost nationwide supply agreement to use Pennzoil Platinum Euro LX Full Synthetic... for almost three years anyways. I'd often see 12pk cases stacked up high in the parts supply room.
Would not doubt that is whats inside the Hyundai 0w30 offering.
If that contract-to-use 12 quart cases has now ended, then perhaps someone "in the know" can update what oil brand Hyundai is using for OEM / factory-fill today. They have used SOPUS products for a long-long time and our two Hyunkia's came new with Quaker State Synblend 5w20 5-6 years ago.