Write for the reader, not yourself
The biggest mistake bloggers make on their about page is writing a resume. Readers visiting your about page are asking one question: is this blog for me? Your about page should answer that question immediately. Lead with who you help and what you help them do, not your background or credentials.
"I write for first-generation investors learning to build wealth from scratch" tells your ideal reader they are in the right place. A list of your qualifications does not. Your background and story come after you have answered the reader's question.
When you write for yourself, you produce a professional biography. When you write for the reader, you produce a page that converts. The difference is subtle in phrasing but significant in outcome. Open every about page draft with the sentence: this blog is for [reader] who wants to [outcome]. That sentence goes first, or very close to it.