We have been stuffing 7200 RPM drives in cases with far worse airflow then what we now have for decades with little care for drive temps and if drive temps are enough of a concern for you then just invest in a cooler and more expensive SSD.
If you get a HDD you get a 7200 RPM drive unless you are in some niche use case where speed doesn't matter at all and you need power or cost savings in bulk. We have been stuffing 7200 RPM drives in cases with far worse airflow then what we now have for decades with little care for drive temps and if drive temps are enough of a concern for you then just invest in a cooler and more expensive SSD.