1. types: `<image>`: `<gradient>`: `conic-gradient()`: double-position color stops

2. types: `<image>`: `<gradient>`: `linear-gradient()`: double-position color stops

3. types: `<image>`: `<gradient>`: `radial-gradient()`: double-position color stops

4. types: `<image>`: `<gradient>`: `repeating-linear-gradient()`: double-position color stops

5. types: `<image>`: `<gradient>`: `repeating-radial-gradient()`: double-position color stops