Aggregate flowcharts with variants to create a summary visualization

Background:

• I've been tasked to develop a UI to summarize different variants of flowcharts.
• The flowchart content is the workflow of different people on the team.
• These 10+ people do the same set of things (A, B, C) but with different sequencing.
• The goal for this summary visualization is for the executives to easily see the status of each "step" in the workflow, as well as different variations of sequencing.

For example:

• Person 1: step A → step B → step C
• Person 2: step A → step C → step D
• Person 3: step B → step A → step C
• I'm using a 3-step workflow here just to illustrate, but the real workflow could be 10+ steps, and not always linear (could have branching).

Question:

• How do I create a summary visualization to illustrate the "overall flowchart" that not only shows what the steps are, but also indicate the different sequencing variations?
• My current approach in the screenshot is to "merge" them, but it doesn't really capture the "sequencing" (what do people start / end with) and "weight" (how much is step A being used) aspect.