First let's not pretend you or anyone else knows anything about specs, naming convention nor generation numbering of Chinese SSNsNothing disappeared behind any couches.
Here's a timeline of the USN's development of SSNs:
Nautilus/Seawolf 1954/1957
Skate 1957
Skipjack 1959
Permit 1961
Sturgeon 1967
Los Angeles 1976
688i 1988
Seawolf 1997
Virginia 2004
You could make a case for Seawolf and Virginia sharing the same technology level, but that's still 8 generations of SSN technological advancement.
Meanwhile here's the PLAN's timeline of SSN development:
091 1974
093 2006
093A 2015
093B 2022
Even if you count each of these 093 iterations as entire separate generations of submarine technology (like the 688i), that's still only 4 generations vs USN's 8 or 9 generations.
You would have to believe that the PLAN's submarine was spectacular enough to skip a generation each generation, which is not totally unreasonable, but even if you do you've got something like
Nautilus/Seawolf - 091
Skipjack - 093
Sturgeon - 093A
688i - 093B
Seawolf/Virginia - 095
Lastly, you really have to ask yourself: if 093B already has what the PLAN wants in a state of the art sub, why is there even a 095 program???
Not sure what you mean by advertising, but the 091 and 093 and 093A and 093B dates of commission are fairly well known to everyone, even us military enthusiasts. Nobody knows of any other PLAN sub classes. Hard to "advertise" what you don't actually have, no?
Should I bust out the pom-poms now? This sentence does not have anything to do with anything, much less the timeline of the PLAN's submarine programs. If you want to theorize some unknown classes of PLAN SSNs that nobody knows actually exist, you're welcome to speculate on such things. But in the real life the rest of us just take what we know.
Tell me, if Type 052 already have what PLAN wants in a destroyer, why is there a Type 055 program?
Also tell me, if you had no access to visuals or specs, if Type 052B was launched in 2004, and China's is building Type 052D today, does this mean China's was waiting for Type 055 to match Flight 2 Burke from the 1990s?
You really should work on your object permanence, because if you think China forgot about SSNs, you might as well believe China's still building Type 052Bs.
Seawolf and Virginias are decdes old, America is just as behind underwater as above water, the reason Americans think they have an edge in SSN is because and only because they can't observe it, because they lack object permenance, like you.