Need help for fine tuning this query

Please advice on Query Tuning for below requirement.

I have 4 tables Table1....Table4. Where Table1 will be used for other three tables.

I have query something as below

;With Chk As
(
Select Distinct Col1 From Table1
)
Select Chk.Col1,
 (Select Top1 Col2 From Table2 Where Chk.col1 = Table2.Col1
  Group By Col1,col2
  Order By Len(Col1) Desc) as'ABC',

 (Select Top1 Col2 From Table3 Where Chk.col1 = Table2.Col1
  Group By Col1,col2
  Order By Len(Col1) Desc) as'PQR',

 (Select Top1 Col2 From Table4 Where Chk.col1 = Table2.Col1
  Group By Col1,col2
  Order By Len(Col1) Desc) as'XYZ'
From Chk.

I am confused whether this query can be written using left joins or any other way.Please advice.

Please have look on the comment