I tend to think of the design process in the map above. There are three main phases: research, design, and implementation. The processes starts with questions or problems, with research leading to insights, then design to proposed solutions, and then finishes with implemented solutions. The height of the three phases represent the divergent thinking at the start of each phase, and the convergent thinking towards the end, with the amount of divergence diminishing as we move from research to implementation. I also render multiple paths within each phase to try and show the various directions explored and complicated nature of each phase.
Another idea that I find useful to layer on the design process is the consideration of the spectrums of current state to future state (x-axis), and concrete to abstract (y-axis), the above inspired by the Analysis-Synthesis Bridge Model (Dubberly, Evenson, & Robinson). We generally start with concrete information about the current state (lower left quadrant), and with this data about how the world is we synthesize an abstracted model of the current state (upper left quadrant). We then design an abstrated vision of the future state (upper right quadrant) and then work make real that vision of the future (lower right quadrant). Additionally, I've highlighted the moments of divergence and convergence through the process.