Eco-Fused 1x Vertical Sword Mount - Dagger Display Wall Hanger - Adjustable Multifunctional Mount - Stainless Steel Wall Rack for Axe, Daggers, Knives (Black)

I've seen those and also been dubious about the strength. Amazon returns are very easy though, so might be worth trying. Some photos in the reviews show much heavier looking swords then what you show working fine. I've gotten a number of this style https://www.amazon.com/Eco-Fused-Vertical-Sword-Mount-Multifunctional/dp/B0CXPFV6TP which work well, but for much flatter swords than what you've got.