I honestly think it's unfair at this point to compare some of these models and the trajectory their careers have taken. They're all just so different.
Gisele- clearly the GOAT. She's straddled both commercial and high fashion realms flawlessly. Walked every catwalk, done every campaign, been a muse to every single designer practically and on top of that she was a VS superstar (for the relatively short time she was there). And not to diminish her accomplishments, but her famous boyfriends (Leo) and ex-husband (Tom Brady) made her visible to all of those midwesterners in America that have never looked at Vogue/Elle/etc. She's become the face of an entire country, Brazil, and she's a part of the cultural zeitgeist in a way that none of the other models except the 90s supers are.
Heidi- she really didn't do much at all in fashion. I think I can count her runway shows other than VS on one hand. Her fame is really due to VS and Sports Illustrated. She's dabbled in a few fashion editorials before (Her Citizen K cover and editorial playing the Amish milkmaid is incredible to me) but her sphere was commercial. She took the opportunity to pivot to hosting (Germany's Next Top Model, Project Runway, America's Got Talent, etc.) and that's really where she became a household name, again where your average midwesterner could recognize. I'm also a bit shocked that at this stage she did get a L'oreal contract, but I think she's a phenomenal spokesperson and she plays to her strengths.
These two (+Tyra and Kate Moss) I really think are the only models outside of the 90s supers that your average American can name and associate a face too in their age group: 40s-50s.
If we want to talk about Adriana's peers from the 2000s then you have the HF models who are still top models working that no one knows (Raquel, Mariacarla, Karen Elson, and I would even include Isabeli in here) outside of the industry and you have the VS girls who although popular don't really have the same legacy (like Miranda Kerr) with the exception of Candice (but she's 6-7 years younger).
I think it's really just Adriana and Alessandra that are the "biggest" names outside of fashion from their specific era. I love Ale, but I'll concede that Adriana has her beat when it comes to name recognition on the street and her fashion profile. But the two of them are still standing, along with Isabeli, after the Brazilian wave and that says a lot considering some of the girls that were more popular than them at the beginning of their careers (Raica, Ana BB, Mariana Weickert, Caroline Ribeiro, Ana Claudia Michels, and Marcelle Bittar) now don't work much internationally. I think it's a testament that Ale and Adriana both have 21 Vogue covers and are still active models booking more than let's say Karolina Kurkova at the moment who was HUGE when she first started. Now what I don't personally understand, and I mean no hate, is how Irina seems to have catapulted over both Ale and Adriana to reach her level of success. It obviously helped to have STRONG industry support (Donatella Versace, Riccardo Tisci, Piergiorgio, Edward, etc.) and two famous exes (Bradley Cooper and Cristiano Ronaldo) but her level of success in fashion, at least, is insane while still doing commercial money jobs (although maybe not as visible as a VS contract once was).
I then think you have a number of contenders in the 2010s: Karlie Kloss, Barbara Palvin, Candice, Cara, Gigi, Bella. I think Gigi and Bella are the current top social media/nepo models that achieved the most out of that crop (Kendall, Kaia, Hailey, etc.) who seem to do everything: media, HF campaigns, commercial jobs, whatever branded deals they get into. But it's an entirely different generation that we can't really compare.
Anyways, just my two cents. Several of the models I mentioned are icons, and I'm happy several of them are still around being booked and busy.