Padmé is from the Sanskrit padma (पद्म) — "lotus" — the sacred flower of Hindu and Buddhist iconography, associated with the goddesses Lakshmi and Saraswati, and the most-pictured plant in Asian religious art. Played by Natalie Portman across The Phantom Menace (1999), Attack of the Clones (2002), and Revenge of the Sith (2005); appears posthumously in Rogue One and Obi-Wan Kenobi; voiced by Catherine Taber in The Clone Wars (2008-2020).
Padmé 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 Padmé reduce to 9, The Giver. This is a traditional interpretive system, not a factual claim about the name.