Oil change recommendation (issue)

Hi so I have a Prius gen 3rd TOYOTA PRIUS XW3(A) (2011) so i just bought the car 6 months ago when it had 52.000miles and now it has 57.000miles with full details of service intervals and changes and so on in a very good shape THE car was not driven that much as you can see the miles.

But then I was reading the manual about Oil recommendation 0-20w is recommended or 5-30w but even the second one YOU can use but again you should be changing it to 0-20w.. Then I saw the last the service of the car oil was made with 5-40w wich is not even in any Prius recommendation so then I was thinking sometimes the transition can be bit harsher from electricity to gas engine compared to some hybrid I have been driving before(wich were fairly new 2018 and up) maybe it has to do with oil?

So my question is should I change again to 0-20w or 5-30w from 5-40w is it to risky to jump to 0-20w?
Keep in mind I live in Norway (wich is not that hot even in summer)

 

BTW I have another question wich oil would you recommend Mobil 1 ESP universal, Castrol Edge, Also there is a cheaper version of Mobil 1 Super 3000 X1 FORMULA FE universal, Does this matter or what matters is the most the oil type not the brand of it?

 

Last oil change was done with a Mobile 1 3000, Can this be an issue and 5w20 would be better than 0w20 for now right?