Well, it's good to see that a good majority of people in Japan want a Custom Robo in as a playable character. He's the 2nd highest Newcomer (both when looking at Nintendo AND non-Nintendo characters) in Japan and the 5th most wanted character in Japan according to this poll. Shows that a good amount of people actually do care about Ray and the Custom Robo series (at least in Japan, which is where all 5 games were released [the 4th came to the USA and the 5th was international]). I mean, the only Nintendo newcomer in Japan that didn't get lower than Ray seems to be King K. Rool, and he's popular all over the place.
In the USA/Euro poll, he's #16 of the Nintendo Newcomers and #34 overall.
Worldwide, Ray (or a Custom Robo in general) seems to be #11 of the Nintendo Newcomers and #22 of the overall poll. That ain't bad at all. If he doesn't make it in via DLC, at least Nintendo knows that there is a good demand for Ray to make it in someday (maybe Smash 5 if he doesn't get in as Smash 4 DLC).
Thanks for getting that spreadsheet. It gives a good idea. However, like Zoljinx said, seems as though not everyone has voiced their opinions yet (I didn't know about half of these polls). But hey, at least it shows that Ray ain't a lost cause at all. He just needs a bit more support.