Watching with interest as where I currently work we unfortunately come under a larger and ever expanding team that pretty much behaves like this all the time. It's come as quite a shock as everywhere else I've worked in the same sector the teams have mostly been warm and welcoming.
This lot is self obsessed, arrogant, and think I and my other ordinary level colleague are their admin lackeys. We've both complained to our manager but she says she doesn't notice it and we should just say no when they ask us to help with things they should be asking their own admin to help with or, frankly, getting off their lazy behinds to do themselves for a change.
And of course our manager doesn't notice it as she doesn't get that snotty condescension. Not only is she on a relatively senior grade, she spends almost her entire 40 hour week on Teams calls, not there as she's getting involved with all kinds of organisational initiatives that frankly are nothing to do with her if she was actually doing the job she was paid to do, or "strategizing". The whole set up has me looking for other jobs about 2 years before I planned when I took this one....!
And yes, I've been the same grade as the manager in a previous life but that was in a different location and when you got paid for doing your job, not Professional Ingratiation and spending 85% of your time showing off what it is you do! I don't think the salary for jobs at that grade merit the stress levels or the fact you're so removed from the end users any more. Although where I work is a spectacular example of crap management and cultured incompetence.
Definitely going to look up toxic positivity as an approach though!