Idina Menzel (USA): A variation of the name Adina meaning delicate Gentle
Indila (France): She was born Adila which is a female version of Adil which means fair, honest, just. Indila could be a way to get Indi
Shakira (Colombia): A female version of Shakir meaning thankful
Helene Fischer (German); A form of Helen meaning bright shining one
Sia (Australia): A short form of names starting and ending with Si I would guess like Sienna
Kiesza (Canada): She was born Kiesa which would be a modern invented name
Birdy (England): A short form of Bridget or a diminutive of Bird
Hedley (Canada): The name of a Canadian band but Hedley could work as a first name it means Heather clearing
These artists all currently make the top 100 on this chart: www.top100worldsingleschart.com/top-100-world-singles/
babynameobsessed 
Birdy is so cute – I’ve seen it used as short for Elizabeth.
In the case of the singer it’s short for Jasmine