Adjective
"Has preformed" is a verb phrase consisting of the auxiliary verb "has" and the main verb "preformed." In this context, "has" is serving as a helping verb to indicate present perfect tense, while "preformed" is the main verb indicating the action being described.
A phrase is never a part of speech, only a word.
Prepositional phrase
The phrase "in addition" is a prepositional phrase in which "in" is the preposition and "addition" is its object. This phrase, as a phrase, is not a part of speech, although it may function as one, probably an adjective or adverb.
Robotic is an adjective.
A prepositional phrase.
On the mountain top is a preposition phrase, not a part of speech.
That I am is a phrase, the individual words in the phrase are parts of speech. That -- demonstrative, determiner I -- pronoun am -- be verb
adverb phrase
verb
A prepositional phrase.
A prepositional phrase.