In the new update (Silver Grove), a new icon system was added, which turned all profile related icons into "glyphs"
On the page in which these glyphs are listed there are some icons at the top right, some look like a trophy - what do these mean?
The purple trophy icon means the glyph is "premium".
There are two types of glyphs, normal and premium. All the light and dark versions of normal Warframes, including their non-tennogen alt-helmets, are normal glyphs. Everything else carries the trophy icon.