I picked Shreveport, LA as a starting location and went west towards El Paso until I found a city that was slightly over 600 miles of distance. The cities are mostly irrelevant unless you pick something that is exceptionally hilly such as routes through mountain ranges or something.
I did Shreveport, LA to Pesos, TX as an example.
If you're OK with 2 charging stops, an Ioniq 6 or a Tesla Model 3 will work just fine.
Also, charging speed is irrelevant to how many stops you need. Most chargers are >150kW these days, though.
If you truly want to minimize charging stops, you'd be better served charging 3+ times for shorter periods of time, though.