Learn English – ” on the example of the Equation” or “using the Equation as an example”

The noun "globe"(our planet) can take prepositions across, all over and around/round. I think that if it means a sphere on which a map is represented, there may be something on it.

I'd use "the highest/biggest/greatest number" instead of "most number" though.

As for the adverb arguably, to me, it's position in variant B seems to be preferable to that in the original sentence.

Although if you paraphrase the sentence using a literal meaning of "arguably", it may read without any change of the idea:

... and we have, as can be shown by argument, the most number of graduates across the globe.

... and as can be shown by argument, we have the most number of graduates across the globe.

This is called a lining:

material that lines or that is used to line especially the inner surface of something (as a garment)^(MW)

You would ask questions such as:

What are those boots lined with?

Is the lining removable?

Do you have any gloves with fur lining?