Wangmo is from the Tibetan/Bhutanese dbang mo (powerful woman, lady of power). Wangmo Dixey — Bhutanese-American figure. Sonam Wangmo Lhundup — Bhutanese journalist. Princess Wangmo — Bhutanese royal heritage naming. Bhutan is one of the few countries to officially measure Gross National Happiness as a national development metric.
Wangmo 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 Wangmo reduce to 1, The Leader. This is a traditional interpretive system, not a factual claim about the name.