Westside is stacked this year. Brought a ton of key guys back from the runner-up last season. Prep wasn't supposed to be that good this year, but they are usually respectable at worst and they looked like a JV squad last week.
As for the leagues just from a really quick google it looks like KS and NE do things a little differently for organization at the HS level. Nebraska uses districts under the class system to make schedules, but the districts change every 2 years where it appears these Kansas leagues are stable. Apologies if I got that wrong about KS.
Westside is in a district this year with two of the historically weakest Class A football programs Benson and Bryan(both OPS I wonder if they got this game together after OPS canceled?). Grand Island and Norfolk are hit or miss, but usually not bad. Millard North rounds out the district and they are one of the most storied programs in the state.
Off topic, but the district assignments for 2020/2021 were really odd IMO. Don't make much sense travel-wise or with historic matchups.