How do I know if my child can get disability funding in Ontario?

Several disability funding and support programs exist in Ontario but finding, accessing and applying can be an arduous and difficult task for many.
We have listed them on our homepage by category and by age group but thought that bringing them all together would be helpful:
Assistance for Children with Severe Disabilities Program (Income based)
Canada Caregiver Credit : a Federal non-refundable tax credit
DSO: (Developmental Services Ontario (18+) including Passport Funding
Jordan’s Principal (First Nations children anywhere in Canada)
OAP: Ontario Autism Program (under 18)
OSAP: Ontario Student Assistance Program for under-represented learners – Students with disabilities
SSAH: Special Services at Home- Caregiver relief and activities of personal growth