The name reached its all-time peak in 2022 with 138 births ranking #320. FALLING Recent data shows the name is currently falling.
Greyson is a spelling variant of Grayson and belongs to the same modern surname-style family. The altered spelling gives it a slightly cooler, more contemporary visual feel while keeping the same basic background.
This form rose alongside other fashionable spelling variants during the modern surname-name boom. It is best understood as a styling choice rather than a separate older name line.