Icon Packs

Free

• Bootstrap Icons: https://icons.getbootstrap.com/?q=arrow
• Google Material Symbols: https://fonts.google.com/icons
• Heroicons: https://heroicons.com/
  • Also https://heroicons.dev/
• Healthicons: https://healthicons.org/
• React Icons (not sure how easy these are to use in WP): https://react-icons.github.io/react-icons/
• https://tabler.io/icons

Paid

• Seems like a ton of icons for all industries, considering purchasing sub: https://www.flaticon.com/