He is most recognized for his conduct and his constant position on the "mora

MOST can refer to the largest in number or amount:

eg Who do you think will get (the) most votes?

But THE can be left out in informal British English.

MOST can also be used as an adverb meaning VERY:

eg It was most kind of you to meet me.

Now there’s a sentence whose pattern is not rare, and I am not able to figure out the meaning; could you help me?:

He is most recognized for his conduct and his constant position on the “moral high ground” in his fight, as a “shepherd” of his people, against the opium trade in Guangzhou.

I’m not sure whether this sentence is ambiguous: does MOST mean his conduct and his constant position are the most recognized compared with his other qualities? or does MOST mean he is highly (=very) recognized so?

I believe we could read it “He is most recognized… as a “shepherd” of his people”.

Thank you, eugene, but in that case, shouldn’t MOST be placed immediately before AS?

It could, but the author opted for another choice…