Eh arguably Obama is close enough, I have a tough time seeing both him and Trump as the same generation and culturally he was much closer to Gen X even if he was just a few years too old. This is part of why he had such appeal to youth in 2008.
What's also interesting though is that Kamala Harris is the first Gen X VP. And even she's a cusp case, she's only three years younger than Obama.
But I'm actually more surprised by and didn't realize until now that Biden is the only Silent Generation President.
Generation Jones is the social cohort worldwide of the latter half of the baby boomer generation to the first year of Generation X.
Generation Jones is noted for coming of age after a huge swath of their older brothers and sisters in the earlier portion of the Baby Boomer population had; thus, many note that there was a paucity of resources and privileges available to them that were seemingly abundant to older Boomers. Therefore, there is a certain level of bitterness and "jonesing" for the level of doting and affluence granted to older Boomers but denied to them.
The term has enjoyed some currency in political and cultural commentary, including during the 2008 United States presidential election, where Barack Obama (born 1961) and Sarah Palin (born 1964) were on the presidential tickets. As of 2023, the current and preceding vice presidents, Kamala Harris (born 1964) and Mike Pence (born 1959) respectively, are members of Generation Jones.