Exhibitionists enjoy showing their naked body or a sexual activity to other people. Consensually, of course.

Exhibitionists typically pair up with voyeurs.

Voyeurs enjoy watching the nakedness or sexual activity of other people. Consensually, of course.

Voyeurs typically pair up with exhibitionists.

Ageplayers like to play with age as part of their kink. They typically take on a much younger or older age than they actually are, or prefer playing with a partner that does so. Attributes and behavior changes (such as pacifiers, coloring books, speaking in more childlike language, etc.) are commonly paired with this, to enrich the context and make it more appropriate for the played age. Sexuality is not necessarily involved, and there is no link at all with pedophilia (which is simply not on the BDSM spectrum).

Ageplayers typically pair up with other ageplayers.

Littles (girls/boys) are submissive spirits with a strong flavor childlike innocence. They long for a nurturing loving dominant who plays a guiding, almost parental role in their lives. While they require a softer approach to be dominated than most other submissives, their submission can be just as deep as that of other submissives or slaves. Sexuality is not necessarily involved, and there is no link at all with pedophilia (which is simply not on the BDSM spectrum).

Girls/boys typically pair up with daddies/mommies.

Non-monogamists do not see sexuality as necessarily a 1 on 1 thing. Whether this means they will have several relationships or just see other people outside their relationship (or have even more exquisite constructions) depends entirely on the person and the situation, but they all have one thing in common: their sexuality is more than just between them and one fixed partner.

Non-monogamists typically pair up with (several) other non-monogamists.

Degradees like to be degraded and humiliated by their play partner(s), either by being acted upon in a degrading way, or by being forced do things they consider degrading.

Degradees typically pair up with degraders.

Switches like to... well, switch. Always taking a dominant or top position is not for them, neither is always taking a submissive or bottom position. Some prefer to switch with the same partner or partners, others have a dominant play partner and a submissive play partner, but in either case they do not fit on one end point of the spectrum.

Switches typically pair up with other switches.

Experimentalists want to have tried it all. An open mind and an insatiable curiosity are their key features, and they will rarely form an opinion before they have gathered first hand experience. They often have plenty of fantasies and will actively pursue to try them out.

Experimentalists typically pair up with other experimentalists.

Submissives like to follow. Some like to give the control away to their partner(s), some like to have it forcibly taken from them. Some are submissive only in the bedroom, others are submissive throughout their daily life as well (usually with limitations). Unlike the bottom roles (receiving pain/bondage/degradation), being submissive is more about who decides what happens (and takes the responsibility that comes with it) than about the contents of what happens.

Submissives typically pair up with dominants.

Vanilla people enjoy regular, standard sex and relationship models. Nothing wrong with that, as long as you're having fun!

Vanillas typically pair up with other vanillas.

Primals are mainly focused on their natural instincts and they enjoy letting their inner animal out during sex. The key part for primals play is that the participants show their raw, emotional sexual feelings during play. All of the labels, roles, and protocols go out the window, and the prey (you) can become a snarling, growing, clawing animal hell-bent on getting away from its predator.

Preys typically pair up with primal hunters.