I say, and with God's help: The well-known and inherited practice is to limit oneself to glorification (tasbih) and nothing else, with no distinction between obligatory (fard) and non-obligatory (sunnah) prayers. As for the additional phrases that have been reported beyond glorification, they can be recited in sunnah prayers but not in obligatory ones, because they are based on leniency. And God knows best.