Re: Oberth Class the missing link between Enterprise and Reliant
In pure onscreen terms, the E-C doesn't appear outside the parallel timeline. If uniforms can change back and forth, ship designs might as well. OTOH, again in pure onscreen terms, the design we see is never identified as Ambassador class in our reality; this terminology only ever refers to the unseen Horatio.
But the Enterprise-C crews' uniforms didn't change. Only the Ent-D crews' did.
And the Enterprise-C has Okudagram displays which state the vessel as Ambassador class.
Dont believe everything you read on the internet.