A special build of GEGL Effects named GEGL:Styles was made based on the April 4th stable. This build is 100% GEGL and does not use Gimp operations. and is intended to be in Gimp 3. To sadly put it it had to be downgraded to be 100% GEGL compatible. List of changes below.
Differences from current release GEGL Effects and GEGL Styles
1. Solid color fill and color overlay blend modes, Glass on Text, Shiny Text, Knock Out Text, Extra Outline are not there because this happened after April 4th stable.
2. Gradient was entirely removed and Outline Bevel is where Gradient once was.
3.Bevel inside GEGL Styles lost a ton of its blend mode options because they were Gimp only. It was severely downgraded in a sense.
4. Inner Glow inside GEGL Styles lost a bunch of blend mode options but was given a bunch of new GEGL only blend modes that do unique things that the plugin version can't do.
5. In attempt to make the bevel in GEGL Styles better it was given two gegl:levels sliders.
GEGL Styles has three parts
1. Color, Outline and Shadow
2. Bevel and Inner Glow
3. Image File Overlay and Special Options for Outline.
GEGL Styles cannot be released in the wild because it is only meant for Gimp's team and I don't want conflicting binaries floating around.
Images of GEGL Styles