Hi @captain_atharv
Good afternoon and thank you for your question!
To know what type of SharePoint Online template was used in creating the site, connect to SharePoint Online Management Shell using PowerShell (Install the module first if it is not installed)
https://learn.microsoft.com/en-us/powershell/sharepoint/sharepoint-online/connect-sharepoint-online
Run the following:
#Connect to SharePoint Online Management Shell
Connect-SPOService -URL https://yourdomain-admin.sharepoint.com
#Get the site template (type) of the site
Get-SPOSite -identity https://yourdomain.sharepoint.com/sites/thespecificsite | Select Template
#Get the result of Template and try to find the type under this 3rd party site that might help you:
SharePoint Online Site Template ID List
https://www.technologytobusiness.com/microsoft-sharepoint/sharepoint-online-site-template-id
For creating a site, please follow these steps on the following article:
https://support.microsoft.com/en-us/office/create-a-site-in-sharepoint-4d1e11bf-8ddc-499d-b889-2b48d10b1ce8
Please let me know if you have any question or clarification, I will be more than glad to assist you further. If none, please Upvote this answer and Accept it as an answer. Have a great day ahead! 😊