The following is an annotated list of OBIS codes returned by a current SAGEMCOM XT211 Smart Meter installed by Groupe E. The raw values can be seen in the Tasmota console by uncommenting / adding the following line in your gPlug's Script:
; Output data in console - use this to identify the raw data returned from your smart meter
->sensor53 d1
BLUF: Here is the reordered table without the Values column, and with concise labels (no redundant OBIS repeats).
| Label | OBIS Code | Unit | Description | Notes/Interpretation |