Sakurai actually mentioned that the likes of Simon, Richter, Ridley and K.Rool were added due to the Smash Ballot.
This information comes from a Nintendo Dream magazine that was translated by
PushDustIn
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Plus, Ridley was stated to be added due to "international Fan Demand" in a Treehouse Stream back in E3's reveal of Smash Ultimate. So while Sakurai never has stated before hand that he will ad fan demanded characters, its not uncommon for him to mention fan demand as a factor for a character's inlcusion after their reveals, which is why wasn't ruling out the idea of a "Smash Bubble" pick in a similar manner to Banjo in FP1, which quite frankly is the only reason i see why Banjo got in (that and probably good PR for Microsoft)
the problem is with Geno out i really don't see any character that fits this definition, so unless hell freezes over and adds someone like Bandanna Dee (who is, or at least was, a common pick among Smash Conversation), i think the rest of the Pass is gonna be Third Parties that really aren't talked about that much in Smash context and are popular in the larger gaming sphere.