These examples couldn't be more of a junk, honestly. The first isn't even canon, as Minato never stalked Kushina in the manga. The third has literally happened only once. Don't even try to equate this one instance when Sarada was little to her being anything like Hinata, not to mention that hers is just curiosity, while Hinata had a clear crush. The current Sarada has absolutely zero common traits with her, and this in no way proves the pairing will happen (which it won't anyway, since Kishi's done with Naruto, for now at least).