Anal sex and Oral Sex is penetrative.
I would argue that oral sex is not always penetrarive, there is a lot you could do with the tongue and lips without put anything inside the mouth or the other people body
And them you have the long, long range of not penetrative sex acts, that is not for me to describe.
Anyways the Danish in the early XIX encouraged same sex romatic relationship, hug and kiss include, sex maybe, as a practice for the jeterosexual married life.
Maybe make so that insted of homosexual coupkes, they could encourage heterosexual couples that practice with each other and could support the exploration of non PIV or PIA sex acts instead