This is actually how I choose what kind of bikes I like, and which side of the room to keep them on. By which threading their parts are assembled with.
Gotta keep Em' separated. Separate tool box for each also. That stand with the dust on it only holds "French" threaded bikes.

The Caveat Application Table or CAT (as in; "like a cats ass")
Other acronym definitions are also used...

"International Standards Organization"
"Society of American Engineers"
"British Cycle Thread"
"British Cycle #1"
"British Standard Cycle"

Imperial/English/SBT/BSC/Standard/ISO = SAE 26tpi (actually 3 different pitches [course, standard, fine] but 2 of them not used on bikes)
French and Sometimes Italian but not always French = Metric 27tpi
BC1 25tpi (defunct and interchangeable with colorful language)
BCT/Whetworth 'say it sideways' 28tpi (my Fav) Cant use a wrench on these, only a "spanner" will do. (defunct and only for the age'd purist)

Just for thread pitches, then there are steerer diameters, head and cup diameters.
Austrian? German? maybe Belgian? just Fuggetabout it.
What about Russian or Czecholsovolsko? are you sure you want that bike?

Such a mess. Second only to the correlation between ISO, Metric and SAE bicycle tire sizes.
Where 1-3/4" does not equal 1.75" 700-650a/b/c? 635? S2 through S8 EA1/2/3/4?. 3spd...Balloon - 29'r?

I've gotta go sit down.