Replicasets with 0 desired states

Hi recently got access to my companies Azure Kubernetes service. when i tried to do kubectl get replicaset i got the following output(changed service names to maintain anonymity)

NAME                                DESIRED   CURRENT   READY   AGE
service1-54c8f9d7b9                  2         2         2       24d
service1-5c5556ccf7                  0         0         0       339d
service1-6488495f7f                  0         0         0       60d
service1-664999f97c                  0         0         0       87d
service1-68b44cd88                   0         0         0       309d
service1-68bd895c74                  0         0         0       269d
service1-696bcd5448                  0         0         0       205d
service1-6f7569dc5c                  0         0         0       87d
service1-757577dc58                  0         0         0       165d
service1-79c8bb9f79                  0         0         0       325d
service1-7d9d44bd85                  0         0         0       204d
api1-56b859566d                      0         0         0       165d
api1-57c4d4bfbd                      0         0         0       325d
api1-589cdddb6b                      0         0         0       87d
api1-5d556d6564                      0         0         0       87d
api1-65ccc69b74                      0         0         0       205d
api1-7476c49dc7                      0         0         0       309d
api1-7b4c86bff8                      0         0         0       339d
api1-7b4f4fdf9f                      0         0         0       269d
api1-7d874d4f67                      1         1         1       24d
api1-d6b7fcc6d                       0         0         0       65d
api1-f465c6f5f                       0         0         0       60d

I couldn’t understand why there were so many api’s with random number at the end. When i actually looked into the yam files, i see that these are 2 Deployments with 2 replica’s. But, i only see one yaml file per service. Can you please help me understand why there would be so many replicaset’s with 0 states?