FDR ( Franklin Delano Roosevelt0 was the first and most recognized by his initials but one does seem references to JFK ( John F. Kennedy), LBJ (Lyndon B. Johnson) and less often HST ( Harry S. Truman)
There is no President that has the initials B.M.W
Rutherford Birchard Hayes has those initials.
Andrew Jackson
None. The only president close to those initials is JFK- John Fitzgerald Kennedy
Theodore Roosevelt
JQA
IOG
B.m.w
The 32nd president is Franklin D Roosevelt, and his initials are FDR. By yhtac
The initials of Ronald Reagan, who is considered the 40th U. S. President, are R.W.R.
Gerald R. Ford
James Abram Garfield.