The Nvidia attack appears to corroborate the existence of Ada, Hopper, and Blackwell. The main difference between this generation and previous generations of GPUs is that Nvidia has separated the architectural identities to make their applications more explicit.

The images obtained make reference to the Ada, Hopper, and Blackwell GPU architectures. Although the function of each design is not explicitly stated, the GPU names appear to indicate that Ada is a gaming architecture, whilst Hopper and Blackwell are accelerated compute architectures, mentions videocardz.

Lovelace; Ada Lovelace is the name of the GeForce RTX 40. 
NVIDIA will be releasing a successor to each of the Ampere GPUs, including the AD102, AD103, AD104, AD106, AD107, and AD10B, as seen in this image (not 108). At the present, the configurations of such GPUs ar unknown.

Hopper and Blackwell in Data Centers 2022+
Indeed, the NVIDIA Hopper architecture should have two GPUs: the GH100 and GH202. The latter SKU first surfaced in speculations in May 2021. According to leaker "Kopite7kimi," it may be a gaming GPU, although nothing in the images we have appears to substantiate this. Additionally, two Blackwell graphics processing units are listed: the GB100 and GB102.

Nvidia Hack Identifies Two Different GPU Architectures: Ada and Hopper, and Later Blackwell