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.
The Chronicles of St Mary’s series by Jodi Taylor
Rise and Fall of D.O.D.O. by Neal Stephenson and Nicole Galland
Had to scroll pretty far to find St. Mary’s! But don’t call it time travel!
I LOVE the St. Mary’s series. Each book has prompted me to go down different history rabbit holes to learn more the events she described.
And also the Time Police spin off by Taylor
I will read anything by Jodi Taylor. I have devoured her St Mary’s series, the Elizabeth Cage series, and I am now in the middle of her Time Police series.