Previous threads on "The Christian East & West" forum have inquired about the Russian Greek Catholic (RGC) liturgical calendar published in the 1940's:

Recognition of Saints post-schism
Documentation on approval of post-schism eastern saints..PLEASE!!
Post-Schism Orthodox Saints acknowledged by Rome

The primary question raised in all three threads was: Which Russian saints were included in the RGC calendar?

We finally have the answer! With the blessing of Bishop Joseph Werth, Ordinary for Catholics of the Byzantine rite in the Russian Federation, an official church calendar for RGC parishes in Russia has been published. It is a reproduced edition, originally prepared by the Congregation for the Eastern Churches and approved by Popes Pius XI and Pius XII. This edition was edited by Fr. Alexander Burgos of the RGC parish in Saint Petersburg. News article. [sib-catholic.ru]

Here is a 2021 article that provides the background of how the calendar was originally compiled as well as lists the Russian saints included in the calendar: Russian Liturgical Memories in t...sio Vulgata) of the Mid-20th Century [slovene.ru]

The article is in Russian with an English abstract. (I've attached a Google Translate version for your convenience.)