I used Lamarsh's Nuclear Reactor Theory during my undergraduate program, and D&H during my graduate program. I used D&H to teach nuclear reactor theory as a teaching assistant, and it is pretty basic material. So much has changed in nuclear fuel design and core/fuel management since I was in grad school more than 30 years ago.
The only other texts I of which I am aware are:
Introduction to Nuclear Reactor Physics, by Robert E. Masterson, Taylor & Francis, 2017
https://www.taylorfrancis.com/books/9781315118055
It's relatively new, and I don't know much about it. I recommend comparing the table of contents with other texts. There is another book by the same author, Nuclear Reactor Thermal Hydraulics: An Introduction to Nuclear Heat Transfer and Fluid Flow, 2019
https://www.taylorfrancis.com/books/9781315226231
Nuclear Reactor Physics, 2nd, Completely Revised and Enlarged Edition, by Weston M. Stacey, Wiley, June 2007, which is probably considered a modern classic after the older classic by Lamarsh.
https://www.wiley.com/en-us/Nuclear...+Revised+and+Enlarged+Edition-p-9783527611058
There is a 3rd Edition of Stacey's book
Nuclear Reactor Physics, 3rd Edition, 2018
https://www.wiley.com/en-us/Nuclear+Reactor+Physics,+3rd+Edition-p-9783527812301
Yet another book, Fundamentals of Nuclear Engineering
Brent J. Lewis, E. Nihan Onder, Andrew A. Prudil
https://www.wiley.com/en-us/Fundamentals+of+Nuclear+Engineering-p-9781119271499
I've known Lewis about three decades, since I've used some of his research and experimental work, and I only recently met Prudil a few years ago through a mutual colleague and friend.