When it comes to SWAT, no two teams are exactly the same. Given the thousands of LE agencies in the U.S. and Canada, there are thousands of teams that employ similar, yet slightly different, tactical methodology.
What makes SWAT teams so different are their unique situations. Full-time teams are fewer and located mostly in major cities and some states and counties. The vast majority of teams are part-time, ranging from urban and suburban, to rural, to federal law enforcement agencies. A growing trend is to have regional multi-agency SWAT teams, combining resources, equipment, and manpower that individual agencies would otherwise be unable to afford.
Check any state, province, county, city, or village in the U.S. and Canada, and you'll find a wide-ranging number of SWAT teams. You'll also find an equal number of different concepts for the simple reason that each jurisdiction has its own unique politics, geography, mentality, traditions, administrators, attitudes, and so on. All of which make one team very different from the team next to it.
And within this paradigm, seemingly minor changes can, and do, often produce major shockwaves in many teams. All it takes is a single "bad incident," a change in department or team leadership, or a national incident or societal trend to influence a team's concept and/or direction.
Back to LAPD, as the creator of SWAT, what happens to or within LAPD will very likely have a ripple effect that reaches far beyond LAPD. It's guaranteed that there are many law enforcement administrators who watch the events in Los Angeles very closely, with an eye on how they might impact their own teams.