Thamyres might be a variant of Tamiris.
Maïa Léonor Capucine most likely has a foreign parent or was born abroad, otherwise the name just wouldn't fly with our name registry authorities.
Bruna is quite common, though not as much as its masculine counterpart.
Cinara might be a variant of Simara, or of
Ciara. No idea where it comes from.
Marcília is very old-fashioned and unusual, my guess is that it's derived from
Marcus. -ília is a common suffix e.g.
Emília,
Cecília,
Lucília.
Leonilde is very old-fashioned as well and reminds me of an old lady who used to work as a minder at my primary school - it was her name.
Gilmara and Lenira look and sound Brazilian to me, no clue on their etymology - sorry! Perhaps their parents got creative.