Google Contacts
Google Contacts is a contact management tool where you can find contact information together in all Google-based applications you use. With Google Contacts, you can sort your contacts as you wish and automatically save your changes.
Thanks to the forms.app and Google Contacts integration, you can create a new group or contact or add an existing profile to the group you want.
You might also like

FogBugz
Define a project and share it with your entire team via email.Zapier

Workable
Create a company profile and automate employee management.Zapier

Clio
Create a person or company contact and get all the information in one place.Zapier

Dakno
Create a profile with your form data and register it as a lead.Zapier