Do any other races other then Human and half-elf have the ability to get a bonus skill focus at 1st?
How about a class at 1st or 2nd?
If I remember well, the dragoon gets skill focus (ride) as a free feat alongside mounted combat. However, I cant remember any case that would give you a "flexible" skill focus. I imagine you're looking for a better/different way to get eldritch heritage?
That is correct. Elidritch Heritage. Need Skill Focus:intimidation for the Oni bloodline.