Hollow Knight is not a souls borne, it's a Metroidvania. The core mechanics is all about Metroidvania like.
The list was about "Souls Like" games. I personally think Hollow Knight was heavily inspired by Dark Souls which is why I mentioned it. If you have played Hollow Knight you will know why I say so. The way the story and lore is told through item descriptions and random NPCs with little dialogue its exactly like the Souls games, just because you cant level up or use different weapons, doesnt mean its not Souls Like.
The lore have inspired in retro games, Dark souls games is also inspired in retro games, where no tell( cinematics focus) context and more experience context (story imersion in gameplay). Grandpa of Hollow Knight and Dark Souls is Classic Zelda ( The legend of Zelda) and other classics. It's more a ancestry in common than heavily inspired. The ambience and atmospheric resemble Metroid too. Dark Souls innovation is the focus in stamina based action. Hollow Knight don't have stamina based action.
great video about Hollow Knight
And about souls like genre