Kinslee is the modern American spelling of Kinsley — from the Old English Cyne's lēah (king's meadow). A top-500 US baby name since 2014. Kinslee Jacobs — American competitive gymnast. Kinslee Smith — American beauty pageant winner. The base "Kinsley" was popularized in the early 2010s through reality-TV mom-and-baby naming culture — particularly through MTV's Teen Mom franchise; multiple cast members named their daughters Kinsley.
Kinslee does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
—
In Pythagorean numerology the letters of Kinslee reduce to 3, The Communicator. This is a traditional interpretive system, not a factual claim about the name.