I see a few issues with your code. I had to change the attributes to read in the data correctly. Your data has only 1 category value (X=SntmntType) and 4 groups. Default GroupDisplay is STACK. If you want these side by side, use GroupDisplay=CLUSTER. To get them in the order you want, you have to order the values yourself in the data, using grouporder=data.
data Data_Tbl;
attrib
/*SntmntType informat=$15.*/
Source informat=$15.
;
/*infile datalines delimiter='09'x dsd firstobs=1; */
input SntmntType $ Source $ Column1;
datalines;
Ovrll StsfctnPrcnt_1 -0.384
Ovrll StsfctnPrcnt_2 -0.046
Ovrll StsfctnPrcnt_3 0.224
Ovrll StsfctnPrcnt_4 0.346
;
run;
proc print;run;
proc template;
define statgraph StkdClstrBr;
begingraph / datacolors=(verylightred verylightyellow verylightgreen lightblue);
entrytitle '';
layout overlay / xaxisopts=(Label=" ") yaxisopts=(Label=" ");
barchart x=SntmntType y=Column1 / orient=horizontal grouporder=data group=Source
name='a';
discretelegend 'a';
endlayout;
endgraph;
end;
run;
ods listing close;
ods listing;
proc sgrender data=Data_Tbl template=StkdClstrBr;
run;