Luciana is from the Italian-Spanish Luciana — from the Latin Lūcia (light). Luciana is one of the Italian + Portuguese + Spanish feminine names — central to traditional Latin Catholic naming + the Saint Lucia (Saint Lucy, c. 283-304 CE) virgin martyr devotion.
Luciana 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 Luciana reduce to 7, The Seeker. This is a traditional interpretive system, not a factual claim about the name.