(Diagram redrawn from Wikipedia and IPCC 4th Assessment Report)
For a scientist, this is useful, but not being a scientist I looked for a display that I would find inituitive and useful for explaining what I'm learning to others. I'm not going for precision, but rather, for an illustration that can show the change and show when some orbit parameters would have a collective warming or cooling influence. For example, the following contains my exaggeration of orbit eccentricity and tilt:
Tilt is a stretching of the 4-season ring so that the points of summer and winter solstice are elongated. Elongated means tilt is high, making summers and winters more extreme. Eccentricity is the blue elipse, which is exaggerated in relation to Earth's real orbit so that one can easily see when a solstice occurs near perihelion or near aphelion, and then intuitively recognize that this can make a northern hemisphere summer or winter on top of tilt milder (winter near perihelion or summer near aphelion) or more extreme (winter near aphelion; summer near perihelion).
So here are three orbits from the Eemian, starting from right to left, 30,000, 27,000, and 24,000 years ago: