Why would I bother talking to you about Bundesliga, Champions League, Libertadores Cup or whatever else?
Also, I worked with many people from Eastern Europe. Apart from Lithuania, I think all other countries are interested in Football more than in Basketball.
Basketball is the obvious one you're leaving out that's about the same age as Volleyball (itself a US team sport), and probably has the most international popularity -- especially if just going by people-counting since China alone is an enormous market.
Funny thing, though: US players make up about 73% of the MLB but about 78% of the NBA, despite the NBA having more international popularity, and the current best players in both being from non-US countries.
Go to places where you find good Basketball players. Germany, former Yugoslavian countries, Spain, Argentina... All those places are primarily Football countries.
You will find a few people interested in the sport, some youngster might be playing it for fun, but still very much behind football.
It's just not comparable.
But... so? I thought we were talking about if these sports had "nearly no popularity"? Not if they were displacing soccer entirely. "Nearly no popularity" is pretty obviously false based on eyeballs and sales, even if soccer is more popular... And there's a lot more countries and people in the world than just Europe. (But also very American of you to ignore them ;) .) How much would it even matter to the NBA if China is or isn't primarily a basketball country, or just a country with hundreds of millions of fans that also have another sport above it in their personal rankings, if they're making money either way?
EDIT: and of course the name "soccer" originated in England because there were multiple foot-related games and so people made a more specific name. So maybe the weird countries are the ones that lost a fun multi-sport ecosystem and ended up a monoculture...
No other country can like a sport this boring.
I don’t understand the casual sniping against baseball. There are plenty of sports I have no interest in but I don’t call them out because nobody cares what I think of them.
Maybe the only parallel to soccer I can think of is sports like Rugby in UK and some English-speaking countries, Cricket in India, and some sports endemic to countries (such as GAA in Ireland).
The best way to compare the US to other countries in a sport that is similar in terms of interest among other countries is something like Volleyball. Which the US tends to be very good at, with many major competitors. I can't think of anywhere that volleyball is a #1 sport that sees a lot of unstructured play.
All this was obviously about team sports.