Those were regional identities. They were all slavs. In eastern Bohemia however were the "Black Croats" - Harvats. There wasnt even something like "czech bohemia" yet outside of the prague region.That would be up to people who are more familiar with history of Bohemia and lands it conquered in 10th century to determine, whether inhabitants of Moravia assumed Czech identity in these times or kept their own distinct identity.
And regional and sub-tribal identities are not really cultures
quoting myself again:
The remaining "Harvats" in Bohemia however managed to survive and together with the "Dulebians" they competed with the Premyslids from Prague over the control of entire Bohemia but the "Harvatian" "Slavniković" dynasty got slaughtered in 995.
This was a key event for the slavs of Bohemia as their unrivaled rule centered in Prague which allowed the Premyslids, as descendants of the former "Česi" tribe whose mythical forefather "Čeh" founded Prague, to melt all the local slavic tribes into beeing "Czech" which should from then on also equal beeing "Bohemian".