This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
I am very much open to correction on this if you have a citation, though! Its not that easy to actually find that statistic, as most things are broken down by country :)
True, however even global numbers put O ahead of the other major ones, from what I’ve been able to find.
The numbers differ but all sources that discuss global numbers that I could find agreed that O is the most prevelant, at between 32-43% https://biologyinsights.com/what-is-the-most-common-blood-type-and-why-it-matters/
I am very much open to correction on this if you have a citation, though! Its not that easy to actually find that statistic, as most things are broken down by country :)
Yeah global is Type 0 afaik, just on a region basis other types may be more prevalent.