I guess you should be looking for Google Workspace as Gsuite has been renamed. It depends what you want to ingest to Splunk and add-on supporting those logs to be ingested - Splunk Add-on For Google Workspace | Splunkbase this is a splunk supported add-on which i see doc link is broken you have to reachout splunk support for correct link and do a search to find out.
Non Splunk supported add-ons are mostly being developed by Individual developers they usually support it if you contact them in case of any issues with add-on and licensing terms vary free vs paid etc etc you have to read it.
Splunk supported add-ons you can reach out to Splunk support that's the difference in terms of support. Most of the add-ons are free unless there are premium you can find in splunkbase.
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