What's your goal with this diet? Is this a bulk/cut/or maintain?
The reason those items are common is they're all good for you and work the best. They are also generalizations. You can swap brown rice for oats in some meals for example. I can't imagine eating salmon and oatmeal together for instance. Red meat is o.k. a couple of times per week in fact I would recommend it. It's high in "Saturated" fat and that's why some don't include it. Salmon and tuna could be interchanged daily. Keep in mind you need to be flexible if you're to stick to it.
I would add one whole egg to that morning meal too. It's a pretty good base plan and it's mostly whole food so that's great. The other thing to consider is the placement of carbs. I never eat carbs after dinner. That last meal wouldn't work for me. I would add to much fat eating carbs late like that. I try to keep my carbs early in the day and postworkout.
One thing I don't see in that diet anywhere outside of one salad is vegetables. I would add in a cup of broccoli here and there. Those carbs and cals are so low they're not going to affect much but the overall health benefits will.