I noticed many collectors of Сountries, US states, UNESCO WH sites, and similar lists use printed or written lists of their collections to keep track of what they already have, and what is still needed. I’ve been asked, occasionally, by collectors to send some mail (covers mostly) around Russia on their behalf, for their “Russian regions” collections, so I know it’s a “thing” for some philatelists, at least. I’m sure most people keep their lists in digital form, but for those who like to check of boxes or cross out words on physical paper, I’ve made this printable list of Russian Regions (actual as of early 2024).
Click here to open Russian Regions List full size version (A4 size)