The alignment of ISO QMS standards is based on the ISO harmonization using what ISO refers to as a High-Level Structure (HLS). This ensured better integration as all ISO management systems reviewed after 2012 were revised to have the same look and feel by including a set of ten common clauses. Understandably, depending on the purpose and scope of the standards, the other main clauses will differ. ISO Standards are reviewed every 5 years and either confirmed as current or revised. ISO 17025:2017 is currently under review, however, that does not mean it will be revised, as already in 2017 the HLS was adopted. ISO 17025 was revised after ISO 9001:2015 and was aligned to ISO 9001:2015 at the time (both having the HLS). Refer to clause 8 – you will see the harmonization. For interest, see from the ISO website that ISO 9001:2015 was last reviewed and confirmed as current in 2021; ISO 14001:2018 was last reviewed and confirmed in 2022. ISO 45001:2018 is the most recent revised standard you have mentioned.
When integrating QMS in your organizations, you can combine activities together by referencing different clauses for different Standards and ensuring that the appropriate process is followed say for the ISO 17015 and ISO 14001 components of the integrated QMS.