JSFiddle - React, Tailwind, and code Playground

JavaScript

const data = [{
	Group: 'A',
	Name: 'SD'
}, {
	Group: 'B',
	Name: 'FI'
}, {
	Group: 'A',
	Name: 'SD'
}, {
	Group: 'B',
	Name: 'CO'
}];

let unique = [...new Set(data.map(item => item.Group))];
console.log(unique);

//Output should be 
/*[{
	Group: 'A',
	Name: 'SD'
}, {
	Group: 'B',
	Name: 'FI'
},  
{
	Group: 'B',
	Name: 'CO'
}] */