This debate is often controversial because of what the subject is about due to the fact depictions or Iconography of God are usually forbidden. But I will say this, that from discussions from many different groups and people, it seems depictions of God The Son, Jesus Christ, are acceptable, while depictions of God The Father and by extension The Holy Spirit, are not acceptable and sometimes shamed. The reasoning for why depictions of God The Father are usually forbidden are straight forward, That no one has seen The face of Him, and the fact that Christ said "He who has seen Me has seen The Father". In regards to depictions of the Holy Spirit, there isn't much said, and tho while He is depicted as a dove, it should be noted there is no description or statement about what the Holy Spirit, or is appears physically in the Bible. TL;DR: Depictions of Jesus, God The Son, are ok, Depictions of God The Father and by some extension The Holy Spirit, are not and are usually looked down upon.

Example of an icon that would be acceptable:

Christ Pantocrator in the Orthodox Church of St. Alexander Nevsky, Belgrade, Serbia

An Icon of what would not be considered acceptable:

Icon of the Holy Trinity at Vatopedi Monastery, Mount Athos