Sure.
You don't want to talk about deaths (although you really should) so we will stick with infections.
The problem with your links is they are just gross totals and you are using "ever had mask mandate" vs "never had a mask mandate". Those categories don't accurately reflect what happened, but we will keep things simple for you.
I'll use ourworldindata because you can get graphs over time easily.
Sweden: What has been the impact of the Coronavirus Pandemic (COVID-19)?
ourworldindata.org
View attachment 189202
As you can see, during the first period of the pandemic, Denmark consistently had fewer infections per capita than Sweden.
Then, in August, 2021, just before what would be the Omicron wave, Denmark removed their mask mandate and removed all other gathering restrictions by Sept 10, 2021.
Huh, look at that infection curve right after that...