Yes it is purely ElvUI guys. You can take ElvUI and remake almost any UI you want. ElvUI is by far the most advanced customization UI in addon history.
I have made tons of layouts for people in the past with ElvUI. People request I make it. Not really hard, but fun to learn the base of ElvUI and turn it into everything you have always needed / wanted.
So more of an updated picture, I disabled some features in ElvUI to add other addons in and have them look to my desire. It is also a 1 click install too! No hoops to jump through