Present simple - "general truths" and "universal truths"

Hi there teachers,

I’ve been made confused by the different explanations on the usages of Present Simple tense by different sites. Many grammar sites that I’ve gone to state that Present simple tense is used for “universal truths” or “general truths”.
For example – The Queen of England lives in Buckingham Palace. (is this a general truth or a universal truth, please?)
Another example is: A dog has four legs. (is this an example of a “universal truth” or a “general truth”?)

Teachers, Is there any difference between the two terms i.e., “universal truths” and “general truths”? Could you please tell me what it is if there is any?

Also, a few grammar sites say that we use the present simple tense to express “facts” and then provide examples which are very similar to those given above. I’m having a little trouble with defining different uses of present simple tense.
I’d like you to take a look at these examples, please:

1). The President of The USA lives in The White House. (is it a “general truth”, a “fact”, or a “universal truth”, please?)
2). The adult human body contains 206 bones. (same question as above, please.)
3). It rains a lot in winter. (same question as above, please.)
4). We come from Switzerland. (same question as above, please.)

Thank you.