Is there more than one icon style?

I used to be able to add an icon and then either make it solid, colourful or outlined.
Now, it just seems that we can only add icons in one style, which is solid. You can change the colour, but not the style.
Is this a change, or I am I doing something differently?

OK, I just worked it out - actually I had asked support this question once before!

If you are in wireframe mode, you can’t change the style of the icons.