Material Design System Icon grid per https://material.io/design/iconography/system-icons.html#grid-and-keyline-shapes

24dp-material-system-icon-grid.svg

<svg viewBox="0 0 24 24" width="384" height="384" id="root" xmlns="http://www.w3.org/2000/svg">
    <g stroke-width="0.125" stroke="#000" fill="none" stroke-opacity="0.25" id="grid">
        <rect id="outline" x="0" y="0" width="24" height="24" />

        <rect id="square" x="3" y="3" width="18" height="18" rx="2" ry="2"/>
        <rect id="vertical-rectangle" x="4" y="2" width="16" height="20" rx="2" ry="2"/>
        <rect id="horizontal-rectangle" x="2" y="4" width="20" height="16" rx="2" ry="2"/>

        <circle id="circle" cx="12" cy="12" r="10" />
        <circle id="inner-circle" cx="12" cy="12" r="5" />

        <line id="diag1" x1="0" y1="0" x2="24" y2="24" />
        <line id="diag2" x1="0" y1="24" x2="24" y2="0" />

        <line id="vert-left"    x1="8"  y1="0" x2="8"  y2="24" />
        <line id="vert-center"  x1="12" y1="0" x2="12" y2="24" />
        <line id="vert-right"   x1="16" y1="0" x2="16" y2="24" />

        <line id="horiz-upper"  y1="8"  x1="0" y2="8"  x2="24" />
        <line id="horiz-center" y1="12" x1="0" y2="12" x2="24" />
        <line id="horiz-lower"  y1="16" x1="0" y2="16" x2="24" />

        <g id="optional" visibility="hidden">
            <circle id="upper-left-circle"   cx="5"  cy="5"  r="2" stroke-dasharray=".125,.125" />
            <circle id="upper-right-circle"  cx="19" cy="5"  r="2" stroke-dasharray=".125,.125" />
            <circle id="bottom-left-circle"  cx="5"  cy="19" r="2" stroke-dasharray=".125,.125" />
            <circle id="bottom-right-circle" cx="19" cy="19" r="2" stroke-dasharray=".125,.125" />
        </g>
    </g>
</svg>