What you're seeing is different versions ("revisions") of the same SID. IIRC SimBrief defaults to navigation data (called an AIRAC) from 2019 (you'll see that in the "AIRAC Cycle" portion of the New Flight Plan page.) Sometime after the release of that AIRAC the regulating authorities updated the SIDs you're trying to use.
For example, if the KALE2P was revised to change an altitude crossing restriction over a certain fix, it might be reissued as the KALE3P. The next revision might be the KALE4P.
So what you're seeing is SimBrief's navigation database being out of date for free users. If you want the latest AIRAC in SimBrief I think you'll need a Navigraph subscription.
Can you use the newer data? In our FS world, you sure can. What you have in the sim should match the currently published charts for the SIDs, so you'll need to reference those charts. Generally speaking the SID's end points won't change, so as long as you exit the SID at the same point as SimBrief's flight plan, you should be fine. (I see that the KALE2P joins the airway network at SABDA. As long as the KALE3P in the MSFS FMS also crosses SABDA, everything should work, although if the routing to SABDA changed, your fuel burn might be slightly off. It's not a perfect solution, but such are the nuances of flying in a simulated world!)
Hope that helps!