You're correct that baby samurai movies are conceptually related to westerns. 

One of the best crossovers is the most The Magnificent Seven. 
The original Japanese movie is excellent on its own, but I'm often amazed at how much of it came through in the americanized version. It's also really hard to beat Yul Brenner in any role he ever played.  

 Right!! The samurai have swords instead of guns like the cowboys do but same mood!! Putting “The magnificent seven” on my list too ☑️ 

 Good! 

And yes! But also many samurai did also use firearms, just not off the same sort that cowboys used.  

 Well yeah but I mean in the movies they have way more sword fight scenes and the cowboy movies have way more gun fight scenes!! 

 There are modern movies with both stores and guns used in mostly equal measure. If I remember titles, I'll pass them along.  

 Thank you!!