Excel - Live filter of list based on another column?

The Excel solution is (almost) exactly the same. UNIQUE is identical. The difference is the join:

=TEXTJOIN(", ",TRUE,FILTER($B$2:$B$7,$C$2:$C$7=$E2))

It seems these same functions in Google Sheets are available in Microsoft Excel as well:

• UNIQUE (Office 365)
• FILTER (Office 365)
• TEXTJOIN (2019)

=TEXTJOIN(",",TRUE,FILTER(A$2:A$7,B$2:B$7=D2))

Get Unique Values

Filter Column By Another Column and Join Results