Project Skins, Why do they all have different trace repair percentages?

Every operator // project has a different percentage that is repaired. Does this mean some skins are closer to being done than others? That they will be released at different patches or times during patches, or will they all be released at the same time. I'm sure some have noticed that Yasuo is not corrupted, he is complete because he already has his skin. But the others, Popularly assumed as Fiora, Zed, Leona, Lucian, and Trace 1 is perhaps a new champion, Ekko, or even Rengar.

Trace #1: 98% Trace #2: 95% Trace #3: 91% Trace #4: Complete: Project: Yasuo Trace #5: 93% Trace #6: 89%

Will the Percentages really even have an effect on the skins themselves other than just being numbers? they all decrease until it reaches Yasuo who is not corrupt, then it briefly jumps before falling sharply again.