You’ll get a lot of responses but for me (excuse the nostalgia), icon design peaked with famfamfam’s (aka Mark James’s) Silk iconset from ~2005. It was a shame they were never available at higher resolutions (or as SVG), though I’m betting AI (either as Adobe Illustrator or Artificial Intelligence) can probably rectify that these days (and generate subpar additional icons to expand the set).

View: https://peacocksoftware.com/silk

Download: https://github.com/markjames/famfamfam-silk-icons/tree/maste...