The ones that call you to check how you are and meet up for a coffee?
I have a very few (like, maybe, 2) good friends who I know through the school run (one is a parent of a friend of DD's and one a parent of a former classmate of DS) but DS is in a PRU and we don't see any of the parents and his former classmates' parents now breezily wave hello and don't want to meet me separately. I check in with them and then they ask how I am; when we can, we meet for a coffee, but usually me that suggests it.
I have one friend that I met through knitting, two that I know from postgrad days, (the last two don't live locally so no coffee meetings in normal times either). They will also just text or call to find out how I am.
All the other people we know are either friends but not close enough to bother asking how we are, or no longer talk to me because DS is either not acceptable or just off their radar, or if they are parents of friends of DD's they are just casual school gate acquaintances.
I was in an organisation that I thought I had friends in but having left clearly they weren't good friends because they haven't bothered asking how I am (the kind of friend that I always had a family/relationship/child update on when I saw them regularly); I don't have anyone I'm close to at work (I feel that work can sour relationships, TBH, for example one friend that went through adoption with me now just sends me terse functional emails at work - variety of reasons).
So where do/did you meet the friends that you have seen through thick and thin and that STILL keep asking how you are when you don't see them often and/or you are no longer in their daily circle? Or where do you meet new friends that you can call up/will actually call you/will be reliable when suggesting a meet for coffee/walk in the park?