What does "do more of late" mean?

Question

In the sentence below:

The Republican presidential debate earned Fox News record ratings, and despite the clash, no outlet has done more of late to present Donald Trump as a serious thinker than Fox.

What does do more of in the last clause mean?

Answer 1

In this sentence of is not a piece of any sort of 'phrasal' ('particle', 'preposition') verb construction. Together with its object more it forms a preposition phrase locating the clause in time.

of late = lately, recently

You can move it to the front of the clause if you like:

Of late, no outlet has done more to present Donald Trump as a serious thinker.

That is, other outlets have done less than Fox to present Donald Trump as a serious thinker.