ZZ Top 
La Grange
My way is a hundred times easier and still correct

Main riff
G----------------------------------------------------------------------
D----------------------------------------------------------------------
A------------------3-5------------------------------------------------
E-5-5-5-5-5-5-5-----------------------------------------------------

Other riff during solo

G---------------------------------------------------------------------
D------------------1-3----------------------------------------------
A-3-3-3-3-3-3-3---------------------------------------------------
E--------------------------------------------------------------------


The riff to me sounds more complicated than just root notes so I do something like this

A-------------3-5
E-55355353---

But that’s just me and I think it sounds cooler