Your question clearly says "i dont want whatever start with DECS DR/"?
So change for example
A2: =IF(COUNTIF(Sheet1!$E$1:$E$100,"<>"&"DECS DR/"&"*") < ROWS(D$2:$E2),"",INDEX(Sheet1!$B$1:$B$100,SMALL(IF(LEFT(Sheet1!$E$1:$E$100,8) <>"DECS DR/",ROW( Sheet2!$A$1:$A$100)),ROW(A2))))
to:
=IF(COUNTIF(Sheet1!$E$1:$E$100,"<>"&"DECS"&"*") < ROWS(D$2:$E2),"",INDEX(Sheet1!$B$1:$B$100,SMALL(IF(LEFT(Sheet1!$E$1:$E$100,4) <>"DECS",ROW( Sheet2!$A$1:$A$100)),ROW(A2))))
This is array entered with Ctrl+Shift+Enter
Then copy down
Similar for the other columns