Grayson, which you might think of as a Jason-Mason substitute, is on the fast track. Though--you may be surprised to know--Grayson has been in the Top 1000 since 1984, it is now at its highest point ever, at Number 85 and climbing.
Some parents are even adopting Grayson -- or Gracen or Gracyn -- for girls as an androgynous spin on Grace. Greyson is an alternate spelling which, at Number 174, isn't lagging far behind Grayson. The name of the child in The Nanny Diaries is Grayer, and actor Tyler Christopher opted for the unusual spelling of Greysun for his son.