That is exactly the plot that RTFirefly linked to earlier that I was referring to, and you can really see the sparseness I mentioned by looking at it.
The narrowest Dem victory was D + 0.4%. That’s the blue circle on the 50/50 line.
The second narrowest Dem victory was D +12 in district 74 at about the 3/4 line if you divide the graph horizontally into quarters.
All other Dem wins were by 20 points or more.
Those two seats are essentially what is up for grabs in any assembly election in the realistically achievable range of ±8.5.