My pick would have to be the A Whole Nother Story trilogy, in which (spoiler warning) you can only travel back in time. But because time is in a loop of sorts, if you go before the beginning of time, you will be at the end of time. From there you can go back to any time you want to. And time paradoxes cannot be produced. Plus, your memories from the previous timeline exist as well as the memories from the new one.
I have good memories of The Psychology of Time Travel by Kate Mascarenhas
It’s not time travel per se, but also The first fifteen lives of Harry August come to mind.
Harry August is great!
I couldn’t finish that book, (more due to my state of mind than the book itself) I’m a little disheartened (?) To hear its not strictly time travel.