Hi there, I'm so sorry for your loss. Praying for you and your family in this season.
Havent read any of the titles you mentioned, but maybe you'd like to check out pink to habanero (light hearted shoujo manga, completed), kono oto tomare (friendship/club activities-focused with a little bit of romance, ongoing), and tamon b side (idol comedy, ongoing).
I am extremely sorry for your loss. We dont know each other but from one human being to another, I truly wish I could give you a hug.
https://www.mangago.me/read-manga/onna_no_sono_no_hoshi/
This story made me feel light and happy. I havent read it in a while but I remember it being funny and really cute. I enjoyed it a lot and I hope you do too
I'm so sorry, friend. I haven't read those 3 too fortunately. But if you're open to a comedy to lighten things up a bit, this is a pretty good, female led one https://www.mangago.me/read-manga/vampire_family/
And for a heartwarming story, everyone's liking this now https://www.mangago.me/read-manga/on_the_way_to_meet_mom/ it's male led, but very much lovable.

My mother recently passed away from cancer and I really need to take my mind elsewhere but I feel like I have read everything good. I would love to have a heartwarming manga/manwha/manhua to read. It can be sad but not too much because honestly I don't think I can handle it right now. Just for a basis of what I like, some of my favorite stories are Glass mask, Aisha, and Bad ending of an otome. I prefer female lead stories but if it has a kind lovable male lead, i would welcome that too.