Grace or favor
Greisy is a modern phonetic variation of the English name Grace, often found in Spanish-speaking communities. It adapts the traditional virtue name into a more contemporary, stylized form while retaining the original meaning of divine favor or elegance.
Less common today
Greisy isn't in the latest US Top 1000. It last peaked at #7,180 in 2016.
US births per 5-year period, 1990βpresent (SSA data).