Many artists try to resist branding themselves, however, it's necessary if you want to make it big (particularly if you’ve made up a list of artist management companies and are trying to find representation). Knowing who you are, who your audience is, and how you interact with them will work wonders. A strong brand will help potential management see your value. It’s all about creating a package that the audience will want to buy into.
With this comes the idea of individuality. While it may be smart to look to other artists for ideas on what worked well for them, and what fell flat, don’t strive to directly copy anybody else. No matter how successful they are. Stay true to yourself and your own individual voice.