Question about references

Hi all! I am a senior postdoc looking into transitioning to industry (R&D) in Europe, and I have a question regarding the application process.

In academia, all reference letters should come from PIs and people in senior positions, but I was wondering if industry follows the same rules. I have been in my position for 5 years now, and I have mentored several people during this time. I thought that asking one of my colleagues (another postdoc that joined after me and I taught them for their first year) would be a good reference that can speak about working with me and how I am as a leader/mentor. Would this be seen as a positive thing? Or should I try to get PIs that I collaborated with as references?

Thanks!