Packera aurea was formerly Senecio aureus. Recent studies have split this genus. Senecio is one of the largest genera of plants, with about 1240 species even after being split. There are about 60 species now in Packera. I mention this because identification of all these plants is a big and difficult job. I was able to narrow down today's question because I knew the plants were local. If this question came from Colorado, I wouldn't even try.
Be cautious if trying to use this site for identification. Michigan alone has over 2600 species of flowering plants. So far I've posted about 120. Closeup images don't provide enough information for good IDs. For example, the flowers of golden and roundleaf ragwort are indistinguishable.