Extract all values that matches 2 criteria and sort

[PaulM100]

As the title says, can the list of uniques extracted based on 2 criteria be sorted A to Z as well within the formula?
Currently I use this formula:
=IFERROR(INDEX('Data'!$A$2:$A$350,AGGREGATE(15,6,ROW(' Data'!$A$2:$A$350)/('Data'!$D$2:$D$350=A$1)/('Data'!$H$2:$H$350="Buy"),ROW(1:1))),"")

[Pepe Le Mokko]

A sample sheet perhaps?

[PaulM100]

I've attached a sample with 2 sheets

[Bo_Ry]

Please try at C2
=IFNA(INDEX(Data!$A$2:$A$51,MATCH(0,INDEX(COUNTIFS(Data!$A$2:$A$51,"<"&Data!$A$2:$A$51,Data!$H$2:$H$51,"Buy")/(Data!$H$2:$H$51="buy")-SUMPRODUCT(COUNTIFS(Data!$A$2:$A$51,C$1:C1)),,),)),"")

[PaulM100]

Hi Rorya. Is it possible to add a second criteria to your formula? Sample attached

[Bo_Ry]

Try at C2 for Newyork
=IFNA(INDEX(Data!$A$2:$A$51,MATCH(0,INDEX(COUNTIFS(Data!$A$2:$A$51,"<"&Data!$A$2:$A$51,Data!$D$2:$D$51,$C$1)/(Data!$D$2:$D$51=$C$1)-SUMPRODUCT(COUNTIFS(Data!$A$2:$A$51,C$1:C1)),,),)),"")

For Newyork and Buy
=IFNA(INDEX(Data!$A$2:$A$51,MATCH(0,INDEX(COUNTIFS(Data!$A$2:$A$51,"<"&Data!$A$2:$A$51,Data!$H$2:$H$51,"Buy",Data!$D$2:$D$51,$C$1)/(Data!$H$2:$H$51="buy")/(Data!$D$2:$D$51=$C$1)-SUMPRODUCT(COUNTIFS(Data!$A$2:$A$51,C$1:C1)),,),)),"")

[PaulM100]

This is exactly what I needed Rorya. Many thanks for your help, works like a treat!