Lula is a 19th-century American diminutive — variously of Louise (Germanic "famous warrior"), Lucille (Latin "light"), or Tallulah. Lula Carson McCullers — birth name of novelist Carson McCullers (The Heart Is a Lonely Hunter, 1940). Lula Borges — Brazilian musician. "Lula" is the universal nickname of Luiz Inácio Lula da Silva, President of Brazil (2003-2010, 2023-present), though as a male reference. Lula (2004 film).
Lula 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 Lula reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.