Just get this kit.

https://www.amazon.com/Viper-Steel-4400MHz-Performance-Memory/dp/B07KXLFDL6

Really, it's the cheapest b-die out there and I'd recommend it if you want low RAM latency.

This is 100% b-die, and its cheaper.

The kit you linked is most likely b-die, but I'm not 100% certain.

No this kit is. Cheaper and higher binned Patriot Viper Steel DDR4 16GB (2 x 8GB) 4400MHz Performance Memory Kit - PVS416G440C9K https://www.amazon.com/dp/B07KXLFDL6?ref_=cm_sw_r_apann_dp_AW6AZSY4XGJ46FWB5ZGC