William McKinley (Conservative majority) 1898-1903*
1898 (maj.): def. William Randolph Hearst (Liberal), William Jennings Bryan (Populist)
1902 (maj.): def. William Randolph Hearst (Liberal), Theodore Roosevelt (Progressive), William Jennings Bryan (Populist)
Alton Parker (Conservative majority) 1903-1907
1905 (maj.): def. Theodore Roosevelt (Liberal-Progressive), William Jennings Bryan (Populist)
William Howard Taft (Liberal-Progressive majority) 1907-1909*
1907 (maj.): def. Alton Parker (Conservative), William Jennings Bryan (Populist), Victor L. Berger (Social Democratic)
Theodore Roosevelt (Liberal-Progressive majority, then minority) 1909-1911
Woodrow Wilson (Conservative-"True" Progressive coalition) 1911-1916
1911 (coal.): def. Theodore Roosevelt (Liberal-Progressive), Hiram Johnson ("True" Progressive), Victor L. Berger (Social Democratic), Jack London (Socialist Labor)
1915 (coal.): def. Theodore Roosevelt (Liberal-Progressive), Hiram Johnson ("True" Progressive), Meyer London (Social Democratic), Jack London (Socialist Labor)
Jack Pershing (Nonpartisan wartime "Ministry of All Talents") 1916-1919
Leonard Wood (Nonpartisan "Ministry of All Talents" supported by Conservatives, Coalition Liberals, Progressives, National Socialists) 1919-1924
1919 (coal.): def. William McAdoo (Conservative), Robert La Follette (Social Democratic), Theodore Roosevelt (Coalition Liberal), Hiram Johnson (Progressive), (Independent Liberal), (Independent Conservative), W. English Walling (National Socialist), Jack London (Socialist Labor)
Carter Glass (Liberal-Progressive coalition, then United Liberal majority) 1924-1929
1924 (coal.): def. Calvin Coolidge (Conservative), Burton Wheeler (Social Democratic), Theodore Roosevelt (National Liberal), Hiram Johnson (Progressive), (Independent Conservative), (Constitution), (Independent Liberal), Jack London (Socialist Labor), (American Values)
Charles Dawes (Conservative majority) 1929-1931
1929 (maj.): def. George Norris (Social Democratic), Carter Glass (United Liberal), Alfred Wagenknecht (Communist), William Pelley (Shieldbearers')
Jackson Wilson (Social Democratic-United Liberal coalition) 1931-1935
1931 (coal.): def. William Pelley (Shieldbearers'), Alfred Wagenknecht (Communist), Franklin Roosevelt (United Liberal), Charles Dawes (Conservative)
Smedley Butler (Nonpartisan civil-wartime "Ministry of All Talents" supported by Social Democrats, United Liberals, Conservatives) 1935-1943
1935 (coal.): def. William Pelley (Shieldbearers'), Jackson Wilson (Social Democratic), John Reed (Communist), Al Smith (United Liberal), Alf Landon (Conservative)
Harry Truman (United Liberal leading transitional government, then United Liberal-Conservative-Social Democratic "tripartisan coalition") 1943-1950
1945 (coal.): def. Thomas Dewey (Conservative), Henry Wallace (Social Democratic), Harry Byrd (States' Rights), Robert Taft (True Conservative)
Thomas Dewey (Conservative-Social Democratic-United Liberal "tripartisan coalition") 1950-1955
1950 (coal.): def. Wayne Morse (Social Democratic), Harry Truman (United Liberal), Styles Bridges (Freedom)
Wayne Morse (Social Democratic-United Liberal coalition) 1955-1959
1955 (coal.): def. Thomas Dewey (Conservative), Styles Bridges (Freedom), Adlai Stevenson (United Liberal)
Jack Kennedy (United Liberal-Social Democratic coalition) 1959-1963
1959 (coal.): def. Richard Nixon (Conservative), Wayne Morse (Social Democratic), Barry Goldwater (Freedom)
Richard Nixon (Conservative majority, then Conservative-Social Democratic-United Liberal "tripartisan coalition", then Conservative-Southern Independent coalition, then Conservative majority, then Conservative minority) 1963-1975
1963 (maj.): def. Jack Kennedy (United Liberal), Hubert Humphrey (Social Democratic), Barry Goldwater (Freedom)
1967 (coal.): def. Hubert Humphrey (Social Democratic), George Wallace (Southern Independent), Nelson Rockefeller (United Liberal)
1969 (coal.): def. Hubert Humphrey (Social Democratic), George Wallace (Southern Independent), Nelson Rockefeller (United Liberal)
1974 (maj.): def. Edmund Muskie (Social Democratic), George Wallace (Southern Independent), Jerry Brown (United Liberal)
George Romney (Conservative minority) 1975-1976
Edmund Muskie (Social Democratic-United Liberal-Christian Reform coalition) 1976-19??
1976 (coal.): def. Gerald Ford (Conservative), Jerry Brown (United Liberal), George Wallace (Southern Independent), Dale Bumpers (Christian Reform)
Hmm... I could go further, but tbh, this is as far as I can go without pushing it too far.