Oluwafunmilayo is from the Yoruba Olúwa (God / Lord) + fún mi (gave me) + láyò (joy) — God gave me joy. Lenin Peace Prize (1970).
Oluwafunmilayo 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 Oluwafunmilayo reduce to 8, The Visionary. This is a traditional interpretive system, not a factual claim about the name.