'o ring groove dimensions metric' as a search term looks to produce some good leads.

This one caught my eye:

https://www.allorings.com/o-ring-groove-design-metric

In the part 'o ring references', it looks like there are different parameters for different conditions of use (static, face seal, etc.) so take care if you use a generic chart.

Engineers Edge is a wonderful online reference for all things design and more. Their o-ring summary for dynamic applications is here **LINK** and there are more specific pages if you search the site. Being American it's imperial but it does give percentages of compression and clearance so you could calculate it for a metric size. It is a good rundown on the how and why grooves are the sizes they are.

As Baldric says the commercial charts are generally based on much higher pressures so th ering gets squashed a lot and creates more friction.

Reeves paper Catalogue and above mentioned book have ME friendly groove details though you would have to go pro rata as they don't go down as small as 1mm section. Typically around 5% compression for ME use as opposed to 10% from commercial tables.