That means a Core Ultra 9 Processor 185H belongs to the first generation as 1 is the first number in the SKU 185H. For the Core 3, 5, 7, and 9, you'll also see 1 or 2 only.

Intel’s 4th Gen Haswell Core i3 processors had either 3MB or 4MB of cache, Haswell Core i5s had either 4MB or 6MB of cache and Haswell Core i7 CPUs had a hefty 8MB of cache, except for the i7 ...

That means a Core Ultra 9 Processor 185H belongs to the first generation as 1 is the first number in the SKU 185H. For the Core 3, 5, 7, and 9, you'll also see 1 or 2 only.