I've been thinking for a bit and I think I might have overthought the ballot's importance to the roster.
Inklings were an inevitability regardless of the ballot as the latest and most popular Nintendo IP between game launches. I don't know which fits Inkling better as both fit really well.
Ridley and K. Rool are popular picks, which I think is how the ballot ideas became mainstream over the past few days. But we always get a few popular picks: Peach and Bowser, Dedede and Diddy Kong, Little Mac and Villager and now Ridley and K. Rool. Until we get a larger sample size, I don't know if this is totally different.
Simon wasn't a popular pick at all. The second Konami character was always expected to be Bomberman, and Simon didn't become popular until Vergeben started looking legit. What we've been experiencing is the hype-induced confirmation bias. I even recall many people in this thread the night before the direct saying to remember that Simon wasn't predicted until Vergeben. Richter is a unique situation as a third party echo, so I don't know if he was as last minute as the other clones have been. But he was even less popular than Simon.
Chrom was popular from what I can recall, and a lot of the Dark Samus popularity was "well if we can't get Ridley..." pre-E3 2018. We don't know if echoes are last minute additions like in Smash 4 and Melee (given the concept was titled, my theory is that they knew they were going to have more clones, gave them a brand and decided who was going to be one later). Clones don't tend to follow any sort of patterns with preference to popularity or relevancy.
I guess under this lens, I don't find the picks in the GAF leak totally out there. We have the usual few popular picks (now including Isaac, Shadow and Isabelle), and the usual few 'out there' Sakurai picks (Prince Sable stands out like a sore thumb).
Or if that's wrong, maybe we can still get Elma or Gen 7 Pokemon.