My (F31) work environment is like watching Mean Girls unfold in real life.

I work on a team of 5 women. We're all in our late twenties or early thirties. Two of us, myself included, are new to the team this year and have felt like we've been excluded from the group.
The other new person and I have been working in our current capacity for about a decade and have worked in multiple locations, so we're not new to the field or how tasks generally get done. The other three have been at this for no more than 3-4 years and approach things in ways that definitely come across as dumber and harder than smarter and easier.
For example, this started when we had to set our schedules. I thought it would make sense for all 5 of us to sit at the table and do schedules together since our individual schedules do impact one another's work flows. Despite my verbal and emailed requests to meet, this never happened. I was ignored. Therefore schedules were developed individually or as a duo, which caused some overlap - hence the desire of doing them all together in the first place. Whenever there is a time conflict, I'm met with shock or rolling eyes instead attempts to correct.
These 3 women also want to meet outside of our contract hours, not to socialize or do happy hour, but to complete work tasks. I have declined because I believe in sticking to my work hours as my form of self care - I work my ass off while I'm at work and sometimes I do stay late or go in early when required.
I have invited these ladies to set a time with me (and I've provided specific times that I'm available) to meet during work hours to help them troubleshoot anything. They have never taken me up on this, they also tend to cancel meetings our administrators REQUIRE us to have because they're "too busy" to meet.
Essentially - there is no communication because it is not a priority. Which brings me to the latest thing....
The other new person was invited to an outside of work opportunity to work on work - this is during our vacation next week. She said it would be great for me to go, but a) I was not invited at all and b) why are we consistently working outside of work?
We're not getting paid for that and aren't we supposed to be resting and doing other things besides work? Shouldn't we talk to administration if the workload is too much?
This is just the tip of their iceberg. These ladies also make passive aggressive comments about my work when I'm in the middle of it - like "I wouldn't do it that way" or something to that effect, or mean-spirited comments about other employees. There are even racializied comments (not directed to me, but still) that make me feel like I have to let it go to survive the workday and that makes me feel ****ty as a human being.
I get along with everyone else at work, just not this team other than the other new person. So what do I do? I know talking with my supervisor is a thing, but I don't even know where to start without sounding like a tattletale or like I'm blowing everything out of proportion.
TL;DR: How do I handle passive aggressive workaholics?
EDIT: Just got back from a happy hour with other employees, who independently voiced that this team has been "difficult to work with" and "has too much power". Interesting. I feel weirdly validated but also like why the hell hasn't anyone said or done anything???


Source.