Include or including?

Hi I am rather confused by the use of include and including in the following siturations:

Basically, which will you use?

1. "The job duties include fixing this, doing that, ..." (i.e. include + -ing)

2. "The job duties include: Handle this, process that, ..." (i.e. include + : + simple)

3. "The job duties including fixing this, doing that, ..." (i.e. including + -ing)

4. "The job duties including but not limited to: Perform this, report that, ..." (i.e. including + : + simple)

Here I made a search online and came across the following examples

e.g. My current job duties include responding to calls for emergency road service including: changing flat tires, jump starting dead batteries...

e.g. Connie Jo is the Administrative Assistant, and her job duties include a variety of tasks including government
reporting, payroll, human resources and party planning.

e.g. Project Manager has multiple complex job duties including but not limited to: : 1. Provides problem-solving, managerial and technical consulting services...

e.g. Health inspectors have broader job duties, including inspecting swimming pools

It seems that they are all legit and mixed up, thats why I am very confused.

Could you please explain clearly when and why a certain form is used?

Thank you!