Very nice Lusche
A few comments:
Those that think they see more of a specific plane than the chart indicates - it could be psychological, but also could be a time zone thing. Possibly the US plane usage increase during US prime time and the use of spit / hurrri / typh increase during UK prime time etc.
The grouped-by-types plot makes more sense. The usage of F4U is split between 5 variants, 4 of which are not that different from each other. Same is the case for the P47, P38 and spitfire. Yes, before people jump, I know they are not EXACTLY the same, but the choosing of a variant is more a matter of personal taste and not passion for one very specific variant. That is in contrast to F6F, N1K, La7 of which you have just one variant, or the P51 where one variant dominates completely.
I am interested to see how the Mosquito is doing since it was fixed. I think because its usage was near zero for most of the year, its averages are so low and are completely skewed.