Lucide icons contain generic icons for a variety of purposes. They are not proper-nouns (i.e. not products with brand and company names)

Simple icons are for proper-nouns (i.e. products that are brand names or company names)

Isometric icons For your App, Product, Posters, Presentations, etc.

100+ Open Source SVG Spinners You can use these SVG based loading icons (also known as spinners, throbbers, loaders) to visually indicate when content is loading or data is being fetched. These animations have been curated from a variety of sources and all have MIT License. Therefore, they can be used commercially without restrictions and it requires no attribution.