Summer Camp might possibly have the most hip Chillwave name ever but they also have a great sound. They are also from the UK not the USA which is a change. It seems to be a side project of quirky folk rocker Jeremy Warmsley (who also shares a name with my old landlord which always confused me!) and one Elizabeth Sankey.
Its a bit Beach House and also bit twee but also a bit jerky and folky and definitely its own sound. Nice stuff. They are doing a loads of festival dates this summer so try and check them out!