In addition to the "B-29 → Tu-4 topic" from the "Imperial vs Metric" thread.
Pre-war, much smaller, Myasishchev's DVB-102... (just 4YI)
https://naukatehnika-com.translate.goog/bombardirovshhik-myasishhev-dvb-102.html?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=ru
and pre-Tu-4 B-29-like DVB-202 and DVB-302
https://raigap-livejournal-com.translate.goog/554213.html?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=ru
https://pikabu-ru.translate.goog/story/letayushchie_kreposti_myasishcheva_oni_ne_srazhalis_za_rodinu__iii_7998190?_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=ru
https://www-airwar-ru.translate.goog/enc/bww2/dvb302.html?_x_tr_sch=http&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=ru
(The project was in development before Tu-4, but was cancelled together with Tupolev's "64" and post-Petlyakov's/Nezval's "Plane T" in favour of B-29 copypasting as Tu-4.
Maybe that's how Tu-4 was produced so quickly.)
***
Between B-1A and Tu-160 there was Myasishchev's M-18.
(When his bureau dismissed, the draft project was adopted by Tu).
https://www-rosinform-ru.translate.goog/istoriya/797736-nerealizovannye-proekty--m-18/?_x_tr_sch=http&_x_tr_sl=auto&_x_tr_tl=en&_x_tr_hl=ru
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Of course, we can recall that Almaz orbital station was designed by same Myasishchev's engineers adopted by Chelomei's bureau.