Here´s a collection of drawings I´ve made of Soviet never-weres, so far it´s only the Sovetsky Soyuz, in both Pr.23 and 24 form, and the Kronshtadt class, in its original 1939 design (with 12" guns) and the two Pr.69I versions, the one earmarked for construction (with German 15" guns) and the originally proposed version with German 11" guns in three gun turrets.
Sovetsky Soyuz in its 1938 design:
The Soyus as modified in late 38 to 39, with the removal of the middle rudder, the aft 100mm guns, reworked armor around the aft gun and a shorter pole mast. This design also has only one catapult and crane, both on the centerline:
The Pr.23 Bis has reworked secondary batteries including triple 152mm turrets, and the 37mm and the director of the 100mm guns shuffled around to make some space for an extra pair of 100mm guns on each side. It also features a reworked armor scheme, simplifying the armor to a uniform 380mm across the belt, as opposed to armor ranging from 375 to 420mm. The belt is also shortened.
Here´s one of the late versions of the Project 24 battleship, with a much more modern superstructure, secondary and tertiary battery loadout:
1939 design for the Kronshtadt:
The reworked design from 1940, with the redesigned fore superstructure to accomodate the taller German barbettes:
The proposed version with triple 11" guns, also featuring the same superstructure rework:
The Stalingrad as laid down in 1951:
UP 41 was an Ansaldo design made for export to the Soviet Union. Unlike the Littorio class, it did not include the rather secretive Pugliese torpedo defense system (which the Soviets reverse-engineered through espionage.) It features 9x406mm guns, 12x152mm guns, 24x90 or 100mm guns (sources differ) and 48x37mm or 45mm in quad mounts (sources also differ) and 24x13,2mm MG mounts.
The Project 28 is basically a stretched 12-gun 6-inch version of the Project 26 Bis. It has 6x100mm DP secondary guns, and 8x37mm and 8x12,7mm guns for AA guns. For scouting the ship would carry two Be-2 floatplanes. The design was later cancelled in favour of Project 68.
Project 68 was the successor to the Pr.28 light cruiser. In most respects they are more or less the same, albeit the Chapayev class has twin 37mm mounts, as opposed to quads. None of the ships were completed to this original design.
Project 68S replaced the Soviet 100mm mounts with German 105mm mounts due to the Soviet mounts not being ready in time.
Project 68I replaced both the Soviet 100mm and 152mm guns with German guns, due to delays in domestic production.
Project 83I was the ex-German cruiser Lutzow that was sold to the Soviets in a fairly advanced state of construction. Plans were to finish her, but due to the war she was never completed
Project X was a design for a large cruiser. She's armed with 12x240mm guns, 12x130mm guns and 6x45mm AA guns. She carries nine Heinkel D.55 floatplanes, and curiously, two semi-submersible MTBs and two mini-subs.
The Pr.94 was a design for a large light cruiser for scouting. It has 9x152mm guns, 6x100mm DP guns and 12x37mm AA guns. For scouting it has two Be-4 floatplanes.
The Project 66 was a design for a large cruiser-killer meant to counter large western cruisers such as the Des Moines class. The design was armed with nine 220mm guns, and had a speed of 34,6kts.
The Project 48 was the successor to the Tashkent class, albeit smaller and possible to build in Soviet yards. None were completed.
Project 47 was a design for a large, fast and heavily armed destroyer, and it featured what for a destroyer is heavy armor.
The Project 45 was an attempt at creating a small, yet powerful destroyer that could keep up with the larger destroyers. Originally her armament was to consist of 3 twin 130mm mounts.