Credit Report Late-Payment removal

I need expert help eliminating several late-payment notations from all three major bureaus—Equifax, Experian and TransUnion—so my credit score rebounds as quickly and sustainably as possible. I’m open to whichever proven strategy you recommend, whether that means disputing inaccuracies directly with the bureaus, negotiating a pay-for-delete with original creditors, or a combination of methods.

At the moment I’m unsure which supporting documents will be required, so guidance on gathering bank statements, correspondence, or goodwill letters is an essential part of the engagement. I’d like clear, step-by-step support from identifying the right evidence through to confirmation that each bureau has updated my file.