I think the graphs are most interesting, they tell a lot about why your house is less efficient than your neighbours.
Check out that electric bill, your neighbours graphs are obviously strongly correlating with the sunlight cycle. Longer days, less electricity. Your house has very weak correlation with the daylight, this means that changing lightbulbs won’t change a thing. You bought something in january last year, and it’s increased your electricity consumption permanently with 15-20%!
Your computers are dominant in your graph I bet, time to replace that server by a Pi cluster.
And the gas bill, it looks like it’s a factor difference with other houses, you can’t fix that by getting a few % more efficient water heater. You could fix it by either reducing the size of your house or insulating it better. (do you really need every room in your house to be warm all the time?) You mention thermostat in singular…
Hope it helps! Good luck in the war