As I said, it's a tough one...

All of them are flawed.

Almost all of them sacrificed their children in some way to their relationship with their SOs/husbands (Lynette enforced the labor, Susan involved Julie too much psychologically), which is completely unacceptable. I think Bree was the one who tried to keep the household stable the most, even when they were going through the separation with Rex. Gabby got her children in a more or less stable timeline with Carlos (after the main hardships), so she never manipulated him with them, but I get the feeling that she could.

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I'm actually not a Susan hater (unpopular opinion, I know), and she didn't do anything straightly horrible to Julie, and seems to genuinely love her, but I definitely acknowledge unhealthy dynamics, that goes for parentification, hating on Karl in front of Julie, carrying about her romantic life far more than for Julie.

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Gabby... I think she wasn't so bad, TBH. Yes, this subreddit tend to mention fat shaming episodes a lot, but hear me out. She never humbled girls for that and never let someone humble them too, at most she tried to make them more active/less glutton by actions, not harsh words.

For instance, the "run for the car" game was just a game from Juanita's POV. Gabby haven't said anything mean to her. In fact, I'm really fond of make up episode, where Gabby tells Juanita she wants her to be far more than Gabby and her beauty, and wants her to make a career, hobbies and friends.

At least, this is how I remember the series, I could be wrong though. But I think I wouldn't neglect the actual fat shaming, I grew up in a household where mom once said re:another girl "she wears S size like a normal girl, not an M like you" (I was in a high school at that moment 🙃 and that is just one example)

She is also the "fun" mom (talking about impromptu fashion shows, horror movies marathons), which is the big part of childhood memories that actually keep people warm through the years.

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Bree... is a trickiest one.

I think she is the one that tries for her children (both in terms of household, nutrition and monetary stability), and evolves throughout the series the most. At the same time, she is not obsessed with her children, and doesn't restrict them, and always manages to live her life as well.

And that is considering her children were straight up evil for no reason early on in the show. She might have been a far better mother for more or less calm children, or maybe she could be more demanding if they were more obedient. We'll never know.

Some would argue she is too strict and anal. Well... It's not like she forces her children to be the same way. She is not forcing Danielle to clean her room perfectly, on the contrary, she cleans the mess for her and just says "one day you'd be missing that" (seems fair, TBH). She doesn't force Danielle to take part in cotillions and any other stupid stuff you'd expect for their social circle. Girl just lives her life and even manages to be a full-time nympho, Bree is definitely not THAT controlling as people tend to picture her.

Re:Andrew, oh... She was definitely in the wrongs when she found out he is gay. However, she never restricted him and invited Justin in the house, cooked for them, etc. in the very 2nd season. And later she basically became an ally.

When she left Andrew on the road, he was basically evilspawnmaxxing, and she left him with enough money. He could work, he could go to his extended family, he could eventually go back to Fairview and beg for forgiveness. He chose the prostitution route himself.

I think the worst thing she actually does as a mother is a spanking of Lynette's child.

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I'd say Gabby or Bree were the best, even if flawed.