We are very much in the same boat as you guys.
We always play together, for the first several years in the lifestyle we just had MFM 3-somes. She got really ...... at a motorcycle rally several years ago & found out how much she enjoyed getting gang banged. We've been enjoying this lifestyle for over 20 years.
When playing in MFM 3-somes I'm always involved, most of the time we take turns fucking her while she's sucking the other one. When there are a group of guys I usually step in & out of the action, I do love watching her getting used by groups of guys. I'm usually naked because I'm joining the action but I never jack off while she playing, she says it's her job to make men cum and she takes very good care of me.
She nor I have ever considered any man other than me her lover, all of the other guys that fuck her are just what we call sex friends. There are guys we've met with multiple times but there has never been anyone that we have met with on a regular basis.
I guess if we had to put labels on ourselves it would be closest to Stag & Vixen. I do call her my Hotwife sometimes just because that's the term everyone seems to want to use. She calls herself a slut because as she puts it, she loves being a slut & getting used by lots of different guys, especially groups of guys. She calls me her warped perverted husband because I love watching groups of total strangers gang banging my wife and respectfully using her like a slut. In reality we are just a normal husband & wife that happens to enjoy playing in this lifestyle when time permits and normal life does not get in the way, unfortunately normal life right now includes Covid so we have been trying to not socialize much and stay healthy!