These bones are all irregular bones, the 5 types of bones include long, short, flat, sesamoid, irregular, bones.

Trapezius - tilt and turn neck, also keeping neck upright
Origin: External occipital protuberance (posterior bottom of skull)
Insertion: clavicle

Scalene - anterior and posterior, anterior is flexing the head to the front side, posterior is flexing the head to back.
Origin: cervicle vertebrae
Insertion: 1st and 2nd ribs

Sternocleidomastoid - when acting alone, it rotates the head, and when acting with other muscles, it flexes the head to the sides.
Origin: clavical
Insertion: temporal bone

Levator scapulae - when the spine is fixed, it lifts and keeps in place the scapula, when the scapula is fixed, it rotates and flexes the cervical spine laterally.
Origin: posterior tubercles
Insertion: border of scapula

Splenius capitis - head extension, and rotation of cervical spine
Origin: Nuchal ligament
Insertion: occipital

Splenius cervicis - rotation of cervical spine
Origin: Spinous process
Insertion: transverse processes

Thyrohyoid - lifts the thyroid gland.
Origin: thyroid cartilage
Insertion: hyoid bone

Omohyoid - Depresses hyoid bone and larynx
Origin: scapula
Insertion: lower border of hyoid bone

Sternohyoid - helps with speech
Origin: posterior end of clavicle
Insertion: lower border of hyoid bone