U.S.C.R. Navy of the XXI Century
That's what we have:
Carrier fleet
1 New Nuclear Carrier (NNC-01) - a 350 m long CVN, basically the Soviet analogue to PA-2/CVF, with 5th gen fighter and 4++ gen bomber airwing. The fleet prime carrier, but not the flagship. EDIT: Named that the "Comrade Stanislav" class, it's just commissioned with Su-53s

hope no one mind this, I'm retired

2 Ulyanovsk class Carriers - both refit with ramjet Bolid missiles (clones of Granit with 4D-04 engines giving Mach 4 speed). Airwing not upgraded due to scarcity of 5th generation planes.
2 Kuznetzov class Carriers - same refit for missiles. Same about the airwings.
4 Mod.Kiev class Carrier - basically all hulls underwent a full refit in the 1990s, making them all due for retirement somewhere along the year 2020.
LPD/LHDs and LSTs
1 Kherson pr.11780 class LHD
1 Type 071 Yuzhao class LPD
30 Ivan Rogov class LSTs
20 Ivan Gren pr. 11711 class LSTs
LCAC and LST boats
30 Murena class LCAC for the modern LHDs
9 Zubr class heavy landing hovercrafts (had 10 initially, 1 of them has been stricken from register and given to ASFR)
30 Serna class landing boats for the modern LHDs
Cruiser fleet
14 Nuclear destroyer/cruiser Anchar pr.1199.0 - replacing the 6 Kirov and 7 Slava class previously in the fleet, and even adding some more beef, because we have more carriers. Basic design upgraded to have over a hundred S-500 SAMs in the VLS systems, however the displacement, nuclear propulsion and generic weapon emplacement remains similar. Non-VLS launchers have been replaced with revolvers which now house last-generation AShMs (those are the Yakhont family or possibly superior ones in the future).
Destroyer fleet
10 Admiral Chabanenko class Destroyers (Fregat/Udaloy-II class, pr.1155.1)
20 Destroyers pr.21956 - 4 boxes for S-500 SAM VLS, 30 missiles each, 16-slot VLS for AShMs or ASuW missiles
Frigate fleet
40 Neustrashimy class frigates
20 22350 Admiral Gorshkov class frigates
10 Nanuchka-IV class small missile ships (fitted with Yakhont AShMs or whatever last generation supersonic AShM there is)
Corvette fleet
20 Steregushy class corvettes
20 Gepard pr. 11611 class corvettes
10 Bora class small missile ships (hovercrafts), capable of over 50 knot speeds and carrying essentially nigh the full anti-ship armament of a Sovremenny
Ekranoplanes
1 experimental SVVP-2500 flying carrier ekranoplane, carries 2 Ka-27 family helos so far
16 Orlionok LST ekranoplanes
5 KM-class LST ekranoplanes
4 Lun-class missile ekranoplanes refit with Yakhont/last generation AShMs obviously
Submarine fleet
2 Borei/Merkuriy 881-995 pumpjet SSGNs
2 Akula 941 superheavy SSGNs (use Meteorit-M missiles)
20 Yasen 885 SSGNs
15 949AM modernized Oscar-IIs with Bolid mach 4 missiles refit instead of Granits
20 Lada class SSKs
20 Amur-950 class SSKs (with Yakhont, Uran, Klub or any other missile type in their VLS)
Command/ELINT
1 SSV-33 Ural 1941 "Titan" project vessel, nuclear long-range intel and missile launch detection vessel; the flagship of the fleet and the command ship of the Admiralty. It's a huge command ship which can unite the aerial defenses of several CVBGs.
5 Primorie class SSVs (command and ELINT ships)
Auxillaries
10 Boris Chilikin AORs
3 Berezina AOEs
4 Ob B-320 hospital ships
1 Depth lift ship
and all other stuff inherited from both nations that I don't have drawings of, including 7 Atomic icebreakers, floating docks, several floating submarine bases
Patrol fleets
80 Uragan-class missile hydrofoils (MRK pr.1240)
50 Vikhr-class missile hydrofoils (MRK pr.206MR)
50 Shtorm-class torpedo hydrofoils (MTK pr. 206M)
70 Sokol-class small ASW hydrofoils (MPK pr. 1145)
100 Antares-class patrol hydrofoils (SKR pr. 133)
In total 350 coastal patrol hydrofoils. All non-hydrofoil craft have been retired or used as training vessels due to old frame age and redundancy.
No Zumwalts, LCS or other useless crap designed, ships are simply stuffed to the max with weaponry.
USCR fleet tactics
With the commission of new LHDs and LPDs, the USCR has found that it's small missile ships can be transported in LPDs, so if a naval conflict around the coast is envisioned, the LPDs and LHDs can transport Nanuchkas or something like that inside their bellies.
Three nuclear carriers have been assigned to the three respective fleets (Med, Northern and Eastern fleets). The Med carrier isn't really for the Mediterranean, it's the "Southern fleet" so to say. The Nothern fleet's carrier is the NNC-01 the most modern one.
The Caspian is held fully under control of the USCR with it's hovercrafts and ekranoplanes. Large ships don't operate there. Same for the Black Sea.
The Med has a few missile cruisers and DDGNs, as well as a Kiev class CV assigned to it.
The assets are roughly equally divided between the three fleets.
Typical CVBG includes a nuclear or conventional carrier as core. If carrier = nuclear, escorts = around 4-5 nuclear Anchars and SSGNs. If carrier = conventional, escorts are 4-6 modern destroyers and SSGNs, maybe a single Anchar.