Most people I know automatically assume Missouri if I say Kansas City but hardly anyone realizes there is a Kansas City, MO as well as a Kansas City, Kansas as well as the entire Kansas City Metro. It's more surprising if people ask me "Kansas or Missouri side" and I usually clarify that I live in the Kansas City Metro on the Kansas side because I neither live in Kansas City, Kansas nor Kansas City, MO. For some reason it gets around that there's this idea that the city of Kansas City is just split between the two states, that is wholly incorrect. It is not one city split between two states but two different cities with two different sets of history in their formations. And the demographics differ as well.
Up at the Legends (where the new Chiefs stadium is rumored to likely be located at) has 3 teams there. The metro is nicknamed the "soccer capital of the U.S.". Sporting KC is in Kansas City, Kansas. They used to be called the KC Wizards (also started by the Hunt family) which has played on the Kansas side for 15 years now since they moved from the Missouri side of the metro. NASCAR is also up there right next to Sporting KC. And right next to that is the Kansas City Monarchs (formerly T-Bones) professional baseball (independent league) team that has been in Kansas City, Kansas for a long time.
NO ONE talks about the Kings anymore that is sooooo long ago and no one cares about NBA here. It's only entered the conversation at the moment just to reference that Missouri used to have an NBA team which left many decades ago. On the Missouri side in the metro (not located in Kansas City, MO but another city within the metro) is the Mavericks which is a ECHL hockey team.
So while Kansas City, MO has had the Chiefs and the Royals as well as hockey the Kansas side has had soccer, baseball and NASCAR for a while. But not for nothing the Big 12 Championship held at the T-Mobile arena wouldn't really be a thing for Kansas City, MO if it weren't for KU Basketball which is on the Kansas side though not technically in the KC metro (depending on the definition is is sometimes lumped into it but is not traditionally considered part of it).
Frankly a lot of people could use some lessons on the history here. Bleeding Kansas time period is a good one to get an idea about how the two areas are right here in the KC Metro most especially. The very long-lived (as in before the Civil War during, before and after the Bleeding Kansas time period) angst between the two states also helps to understand in part the feelings some Missourians have towards the idea of the team moving to Kansas. We are one metro and one big large community here but you'd be hard pressed to find many that don't know there's that undercurrent of KS/MO angst. It also helps to learn about the formations of the two cities as well as the metro as a whole.