Here's a pretty comprehensive list of memory and the IC's used:
https://www.reddit.com/r/Amd/comments/62vp2g/clearing_up_any_samsung_bdie_confusion_eg_on/
From what i've read/heard anything with cl14 at 3200mhz is a good guarantee it will be Samsung b-die, of course there will always be exceptions.
Anything listed with cl15+ could be using other manufacture IC's.
G.Skill Flare X 3200Mhz is made for Ryzen and i believe is always using Samsung b-die, it's also more expensive then most other kits, at least here in Australia.
I would cross check with your motherboard memory support list to make sure the memory you choose is compatible.