I wrote about pre-death jason being very affectionate with bruce and dick in your asks when talking about my ideal batfamily, and I’d love that to continue on post-death as well. (I like jason being an honorary al ghul (talia is lying in the wait with adoption papers), and I’m piggybacking off of the talia & jason anon).
it may take him some time, he’s more wary, but I imagine him greeting talia with those double cheek presses I’ve seen people do where they kiss the air (if you get what I’m saying). he would also kiss her hand or let her pet his hair while he rests his head in her lap. if jason is accompanying her somewhere out in public, he lends her his arm to link with hers.
oh and baby damian is getting kissed within an inch of his life all over his tiny face. everyday. it’s part of his morning and night routines. jason peppers his face with kisses on the cheek, on the nose, the eyes, the chin, and everything. he’s very thorough.
if they meet when damian’s in infancy / toddler stage, then you bet jason is the kind of person who would blow raspberries on his baby brother’s belly.
they’d go everywhere together when they can, damian gripping onto jason’s pinkie (his hands are tiny). when they’re moving about in private, jason lifts to rest damian on his hip. damian verbally protests this behaviour, but he suspiciously does nothing else to stop it. jason teases damian incessantly about his height by using him as an armrest, and by leaning his full weight on damian until the boy collapses. this persists until damian goes to live with bruce.
the most affectionate thing ra’s can do is turn a blind eye to this coddling exchange between his heirs. and threaten violence if they are hurt.
oh league jason being the sweetest of sweethearts that even ra's can't be mad at!!! he is talia's babyyyy okay?! she kisses him on the forehead whenever she can and brushes back his hair so lovingly. that is her child and her beloved's child and she will die for this sweet boy. she will kill for him, and has!
baby dami pretending like he's too good for his big brother's cuddles and kisses ☹️♥️
jason blows raspberries in his chubby cheek and dami, very seriously and with a tiny hand out, goes, "no, jay jay. no more. i'm a big boy now." jason wants to SQUEAL omg he's gonna die his little brother is so precious
baby dami holding a tiny sword and promising his mama and jayjay that he'll protect them! meanwhile he's ankle height and a chubby angel who still waddles.
i can see jason crying about bruce and trying to be quiet about it because he doesn't wanna disturb talia or damian but then dami silently sits beside him and places a hand on his shoulder like he's a forty five year old father and not a three year old kid. talia arrives next and holds her babies to her chest. she absolutely threatens her beloved to treat her babies well and to spoil them like the royals they are. bruce doesn't dare disobey his beautiful wife (yes they're not together anymore no bruce doesn't wanna think about that please stop but also any advice on how to win back your gorgeous, kind, loving darling?)
omg jason and dami combining their cutieful powers to get bruce to do anything they want !!! they're lethal together. dick and even tim can attest