Things of note that I can see in your imaging - You’ve completely lost the natural lordotic curve in your cervical spine. That alone can bring the styloids & hyoid bone into closer proximity to nerves & vascular tissues in the neck though it has been speculated that the neck curve is lost when there’s IJV compression due to ES as the body’s way of trying to create more space for the IJV so it can drain the deoxygenated blood from the brain more efficiently. The lordotic curve can be restored w/ gentle exercises but it takes patience & is a slow process. The following link has helpful information about cervical curve restoration.
In this image of your left styloid, it appears from the angle of the picture that your left styloid is extremely close to the left transverse process of C1 (green circled area). If that’s truly the case, your left IJV is likely being squashed between the two & that means your vagus nerve is most likely being squashed at that point, too. Some of your symptoms could be vagal related. Also due to the angle of the image, it appears the greater horn of your hyoid could be very close to your spine which can cause internal/external carotid artery compression but can also cause symptoms that point to hyoid bone syndrome as you’ve suggested. Unfortunately, it doesn’t appear the CT scan was done w/ contrast as none of your veins or arteries appear in the images you posted & contrast is necessary to see those.
I could give you more precise information if your styloids, hyoid & C1 were shown in the sagittal plane (from the side) vs. from behind as they are. Below is a picture showing the anatomical planes of the human body:
