Aminata is the West African (Senegalese, Malian, Guinean) form of the Arabic Amina — meaning "trustworthy" or "honest." Amina was the name of the Prophet Muhammad's mother.
Aminata Touré (born 1962), the Senegalese politician and former Prime Minister, is a contemporary bearer.
Aminata 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 Aminata reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.