Following accounts that you admire is a great way to get ideas and inspiration for your feeds, especially if they post about topics that are relevant to your business.
Building relationships online with these accounts can also help build your own following.
A few key things to do are:
Follow the accounts you admire;
Engage with their content by liking, commenting and sharing - they may well follow you back if they see your content is also relevant to them;
Use their content as inspiration for what you post - see how they do it well;
As you build a relationship with them, tag them into relevant posts - if they engage with this or ideally share this, your content will be seen by their followers, too.