I’ve probably read most of the older stuff I’m interested in, but it’s harder to keep up with the newer stuff.
Looking for stuff like the Nantucket series, Axis of Time, 163x, ect
Read the King book about Kennedy and didn’t care much for it.
“Newer” as in, after what year?
Last 5 years, say.
It’s young adult fiction, but check out Rysa Walker’s “The Chronos Files”, of which two novels and one novella are out.
I’m unfamiliar with the ones you mention, but my favorite pseudo-time-travel book of the last several years is The First Fifteen Lives of Harry August. As you discover in the first few pages, Harry August lives a normal life in the 20th century and dies, only to reawaken at the beginning of his life with all his memories intact, over and over. The author does very fun things with this premise. Apparently it’s similar to another novel called Replay, which is on my list to read.
The Connie Willis books Blackout and All Clear are right around your stated definition of “recent,” so I’m not sure if you’ve read them or not. They won the Nebula and Hugo for Best Novel (counted as one book, I believe).
YA is fine, I like Crosstime Traffic, even if it’s not as polished as Turtledove’s other work or even strictly time travel.
Definitely check out The 15 Lives thanks
You might enjoy the Destroyermen series… a WWII American destroyer falls through a wormhole into an alternate earth whose history diverged from ours many epochs ago.
You may have read some of these already, but…
I’m a big fan of Ken Grimwood’s Replay, in which a man keeps dying and going back to earlier points in his life. He lives differently each time, learning (or not) from earlier mistakes, and takes an occasionally-active role in changing history, too. Very good stuff.
Peter David’s Imzadi is hands-down my favorite Star Trek time travel book (and there’ve been many). I was grinning like an idiot for the last third or so.
Jerry Yulsman’s Elleander Morning does some clever things with the whole go-back-in-time-to-kill-Hitler concept. The actual mechanics of time travel are left a little vaugue (OK, a lot vague), but it’s a nifty story.
Robert Heinlein’s 1959 short story “—All You Zombies—” is also a must-read. Temporal paradoxes galore.
In Audrey Niffenegger’s The Time Traveler’s Wife, the involuntary and uncontrollable time-travelling of a young man wreaks havoc upon his decades-long romance with his eventual wife. More a tragic romance than sf, but still very good.
Kate Atkinson’s Life After Life is either a time travel or alternate-universe book; I’m not sure which. It’s about an Englishwoman born early in the 20th C. who keeps dying or being killed, but is reborn and then lives a bit longer each subsequent go-round, learning from her mistakes (or those of others) as she goes. Definitely worth a read.
Any time travel fan should check out To Say Nothing of the Dog by Connie Willis. It’s a weird twist of time travel, romance, mystery and comedy. Now, typically, that blend of genres wouldn’t appeal to me, but it’s written with such razor-edge wit and fantastic characters that it was highly enjoyable.
Long live the Bishop’s Bird Stump!