Your crew is adorable! Thanks for including a picture.
The answer to which vaccinations your dogs need and how frequently depends on their ages and individual risk factors. I am attaching a link to the American Animal Hospital Association's vaccine guideline below.
https://www.aaha.org/guidelines/canine_vaccination_guidelines/practice_vaccination.aspxIn general, they recommend that all dogs receive DAPP and Rabies vaccinations. Those vaccines are considered Core vaccinations. Any other vaccinations are considered Non-Core and are only recommended for dogs that are at risk of contracting those diseases. The above website also includes a Lifestyle-Based Vaccine Calculator to help you determine which diseases your dogs may be at risk for, but be sure to discuss that with your veterinarian to make the best decision.
DAPP vaccinations are generally given every 3 years in adult dogs. The Rabies vaccination is given every 1-3 years depending on your local requirements. The non-core vaccinations do not appear to last as long, so those vaccination need to be given more frequently, but it sounds like your dogs are not likely at risk for those diseases.
Good luck! I hope that was helpful and answered your question. Thanks for using PetCoach.