column-plus from coolicons in Line with regular corners. table, add, insert, grid, spreadsheet, new. Other styles and corners: @coolicons/<style>/<radius>/column-plus with line, duocolor, duotone, fill or bulk and sharp or round. Leave out regular, like @coolicons/fill/column-plus, and use @coolicons/column-plus for line with regular corners.
pnpm dlx shadcn@latest add "https://coolicons.cool/r/column-plus.json"