I disagree a lot with the placements, but ultimately I think filler played a big role in why certain characters were so high. I know Shisui features in a few filler arcs, I know Fugaku features in at least one filler arc, I'm not sure about Ashina Uzumaki but I can only imagine he received his fair share of hype.
Minato as number one is very disappointing, there's not a lot of mystery surrounding the character and I do not think a one shot focused on any time period in his life will be satisfying. It'll be nice to see Jiraiya again, but his personality is white bread with a little bit of nonfat butter spread gingerly over its surface. He's nothing but Naruto's dad.
Sakura is very well liked, I imagine there's more Sakura stans online willing to vote religiously every day than most other fandoms.
Any Akatsuki centric spinoff would've been A+ tier. Toss us new interactions between the pairs, have them step on some non-Konoha shinobi or something.