To whom it may concern, (and for the first time in a while I write this sentence not to start a cover letter), here is a very brief recap of swimming qualification after some events took place. Please note that, as @phelpspointed out and as I'm sure almost all of you know, every nation uses its own additional qualification criteria, so this is a purely statistical data made for my own fun.
At the moment, 25 athletes have reached at least once the minimum A in one event. In total, considering multiple participation for athletes, I counted 34 times that A standard was reached. At the same time, 121 minimum B were also established (maximum 1 per nation per event, not counting nations where an A standard in the relevant event was reached).
With this data, this is the current quota distribution:
13 athletes with 18 minimum A achieved;
2 athletes with 4 minimum A achieved;
2 athletes with 3 minimum A achieved;
1 athlete with 2 minimum A achieved;
, , and with 1 athlete each, with 1 minimum A.
Other nations having achieved at least one minimum B are ,
Among the qualifying meetings, the most proficient for qualification purposes has been the TYR Pro Swim Series in Des Moines, , with 27 A standard, followed by City of Milan Trophy, with 5, and Greek and Lithuanian national championships, with 1 each.
Hali Flickinger, has achieved a minimum A in 3 different events.
PS: Please note that I only have partial data regarding Korean National Championships.