After you use phrases like this in your acknowledgement remember to specify why you are thankful to these people!
A thesis dedication is dedicated to someone who has played a major role in writing your thesis, in your career and in your life. You value their support and help, and want to show your appreciation by way of a thesis dedication.
Only those who actually helped in some way with the creation of this particular research paper should be mentioned in the thesis acknowledgement.
But remember that you can’t mention only one person (for example, your Supervisor) in your thesis acknowledgement.
But acknowledgements do matter because in amongst the celebration the right people need to be thanked in the right sort of way.
The acknowledgement pages I have looked at vary considerably.
If footnotes are used, the work can be done there, for example, with footnotes that state “I am indebted to xxx for several discussions that helped me to focus this section”.
Without footnotes, more formal provision of a ‘personal conversation’ reference will do the same work.
A perfect acknowledgement, as suggested by These are only a few of such phrases.
The list is long; there are many ways to write thesis acknowledgments.