I think that's just also a result of not knowing what the easy and hard characters are, haha. I started with Helena, but in Ultimate I played Rachel and Momiji since release. They were easy as shit to learn then.
So what it comes down to, pick Rachel as your first character because she's easy and mad sexy.
I dunno man, I mean this is pretty waifu right here:
<3
But yeah, they're both pretty darn beginner friendly lol.