Need a wider lens for portraits

The 50mm 1.4 is great for single person portraits. But you get 4 or more in a family and I find myself moving back out of flash radius. So I'd like to stick with canon brand but open to other ideas. Oh and sticking with a prime lens as well.

So far its •Canon EF 35mm 1.4 L USM •Canon EF 35mm 2 IS USM Or •Sigma 35mm 1.4 DG HSM Art