Show some cut open fruits. Flavor, juiciness, aroma etc. are used in identification in addition to appearance. If none are ripe yet you should post again when you can describe those.

That could well be red delicious. Look at the blossom end of the apple. If there are I think 5 ridges on the tip it's RD. Looks like that might be the case from your pictures.

Thanks for the help. I guess I got RD then. It's just that I was expecting that deep red color and kind of rectangular shape of a typical RD. I had harvested all fruits already since late august to mid september with the same color as above. They are better than store bought ones though. I'm in zone 9B so maybe that affected its coloration.

Heat affects the color and shape of apples. Warmer weather when the apples are small makes them flatter. Warmer weather in fall reduces red coloration. Those really shapely deep red RD that almost have a waist are from cooler climates and sprayed with growth regulators. Those are also newer RD strains that color up much redder.

The best tasting RD are the older strains that look like yours.

Full sun or little sun makes big different in color also.

Looks like Delicious to me. There are so many strains of Red Delicious out there offered for sale. Some of the older strains are more striped but have better flavor than the newer strains that are deep red.

The orchard I worked at many years ago had 4 different strains on Red Delicious and I recall the prettiest strain was tasteless while some strains were dull red or even striped and had great flavor.