Yes, there are some almost reaching the 500SP, but I would reinforce the call for you to take another look because there are much more people under that value. She posts an image with a long list of users and you can clearly see some of them don't even have reach 100SP or 200SP.

I will leave you the direct link here for her post so you can see all the users names so you can select the ones you would like to help.
https://steemit.com/steem/@paulag/redfish-power-up-league-and-wall-of-fame-week-47

Everyone there tries to be most active they can, based on their possibilities and time schedule in order to be able to post and contribute. So it's just a matter of really check their work with some time and you will find a lot of people that deserve your attention to reach minnow level.