Check the Molotow GraFX markers on the left side. These are fiber pens or 'color markers', and there many more brands. Others markers are filled are paint such as Molotow One4All range: [link]. Those last were used for the white highlights on my sketch.
Yes it has some differences. Paint markers can cover more using more pigment, they also take more time to dry and you can use'em over any colour again and again. Paint markers match perfect for textile or canvas artworks.
Fiber markers are more traditionals with a more transparent finish, but essential for sketching.