I always thought that number before
G in the part number is a number of identical gates in the chip. 1G08 is one AND gate, 2G08 is two AND gates in one package. Simple and understandable.
I am going to use LVC74 in my design, and was astonished to find out that 2G74 has one D-type flip flop in it. Fortunately, I did not buy it yet being totally ensured that it must have two DFFs in SSOP-8 package - 2 power pins, one data pin, one clock pin, and one output pin per trigger (no set, no clear, no inverted output).
I see this question on TI forum, and in my opinion answer is not clear, and seems to be wrong. I have compared 1G74 and 2G74 datasheets from Nexperia, and they appear the same with difference in document formatting.