To my knowledge, no Russian targeting plans have ever been declassified, but an open source project called OPEN-RISOP[^1] has a few hypothetical attack plans that give some idea of what would be targeted.

Its creator, David Teter, is a former advisor to USSTRATCOM, DIA, and DTRA on strategic plans (SIOP/OPLANs 8044/8010), kinetic and non-kinetic weapon effects, vulnerability analysis, and targeting.

It's raw data, so to get a visualization you need to use something like Nuclear War Simulator[^2]†. Here's a video showing one such plan:

https://www.youtube.com/watch?v=WF0mEOCK2KE

[^1]: https://github.com/davidteter/OPEN-RISOP

[^2]: https://nuclearwarsimulator.com

† NWS is on Steam, but don't go into it expecting a game-like experience. It's more of a rather technical "what-if" simulator.