I'm not an expert in them, I sort of ended up in this forum via your question in the other forum, but flowering in these plants depends on factors such as daylength and temperature. One of the experts in this forum can hopefully guide you better than me, but these two extension sites links describe how to get them to flower, and the second of the two tells you how to differentiate between the different "holiday" cacti at the bottom of the article:
https://web.extension.illinois...
https://hort.purdue.edu/ext/ca...
