Ali is here
Here Ali is
Here is Ali
Please tell what is Ali in sentences subject something else. and in first here is adverb please tell in other two sentences what is here .
In all three sentences, ‘Ali’ is the subject and ‘here’ is an adverb telling where.
The rearrangement of word order doesn’t change the words’ usage in the sentences, but it does make the second and third sentences read awkwardly.