Synthetics

Sponges – Cycles + microdisplacement (it’s important to use adaptive subdivision and use the microdisplacement control to displace the mesh, this displacement combined with the subsurface scattering will achieve the sponge look

Car Paint 2 – eevee/cycles

Car Paint – eevee/cycles

Plastic – eevee/cycles

Resin – Cycles Recommended

Rubber – eevee/cycles