Our parish is not really representative. Our Russian Greek Catholic Church parishes seem to function pretty much autonomously at this point. My parish uses the calendar put out by
SVS Press of St Vladimir’s Orthodox Theological Seminary. I’ve never known us to not commemorate the saint of the day listed on it, including as has been mentioned here before, Righteous Father Alexis whose feast fell on a Saturday this year when we were having DL.
On the Sunday of All Saints of America and Russia our priest reminded us that we have an American saint whose relics are just up the street from us in the
Holy Virgin Cathedral (ROCOR), St John of Shanghai and San Francisco, and we were all encouraged to go and venerate his relics. The feast day of St John of Shanghai and San Francisco he was commemorated in our DL and many of our parish including clergy went and venerated his relics during the two or three profound days when many events were taking place in Holy Virgin Cathedral in his honor. (These relics were
recently re-vested.)
I’ve never known us to commemorate a strictly post-Schism western saint in liturgy, but certainly they have been mentioned in homilies. I have heard Western saints mentioned in homilies in an Orthodox Church, St. Francis comes to mind.
We do have Saint Thérèse of Lisieux on our Iconostasis which is quite unusual. She is there due to her presence on the iconostasis of
Russicum seminarian’s chapel. Several parishioners have a devotion to St. Thérèse of Lisieux .
A number of us, if not all of us, have devotions to some Western saints. I have a devotion to St. Damien of Molokai (It appears now that Blessed Mother Marianne Cope who cared for St. Damien as he was dying will be canonized by the Latin Church soon.)