Build a B2B Lead List (Excel Delivery)

Hi! I'm looking for someone detail-oriented to build a clean lead list of B2B companies based in Oklahoma. This is market research data collection, so accuracy matters more than speed. I need the final list delivered as an Excel file with these columns: - Company name - Website - Industry / niche - City and state (Oklahoma-based only) - Company size (employee count or range) - Decision-maker name (owner, marketing director, or similar) - Job title - Business email - Phone number - LinkedIn company page I'm targeting small to mid-size B2B companies, roughly 10 to 200 employees. Please pull from public business directories and company websites. All contact info should come from publicly available sources. When you apply, tell me what sources you'll use and how you verify emails are accurate and current.