Remember that you get a month of free workspace (including a valid email) before you commit. Easy to try adding new org units and enabling credentials apis

GSuite is basically being  rebranded as Google Workspace.

GSuite Basic has a lot more features than Workspace Business Starter (Business Standard and Enterprise). For e.g. - an unlimited number of user licenses can be purchased.  For all  Workspace products, 300 is the limit.

Users and Groups live within Google Workspace (not natively within the google cloud platform).

Business Starter Business Standard Business Plus
Gmail and Calendar ✔ ✔ ✔
Groups for Business ✔ ✔ ✔
Chat and chat spaces ✔ ✔ ✔
Digital whiteboarding with Jamboard ✔ ✔ ✔
Drive storage and Docs editors ✔ ✔ ✔
Video conferencing with Meet ✔ ✔ ✔
Directory management ✔ ✔ ✔
Sites ✔ ✔ ✔
Tasks ✔ ✔ ✔
Notetaking with Keep ✔ ✔ ✔
Additional Google services ✔ ✔ ✔
Google Cloud Search for internal search and assist
(across Google services, only)		 ✔ ✔
Google Vault for eDiscovery and information governance ✔