Then I really doubt that you'll find a match.
I would say the closest is Google Docs (Offline Extension):
[https://chromewebstore.google.com/detail/google-docs-offline/ghbmnnjooekpmoecnnnilnnbdlolhkhi]
(https://chromewebstore.google.com/detail/google-docs-offline/ghbmnnjooekpmoecnnnilnnbdlolhkhi)
I have tried every single one and they managed to dissapoint me:
LibreOffice - Zorin's own theme has problems with it and 30% of the buttons are not even readable and even though I reported both here and libre issue tracker, it's not been fixed. (You can override gtk theme but this breaks other apps' themes.). I also had problems with excels, google/msoffice was rendering some cells correctly but not libre.
OpenOffice - It's just libreoffice.
Collabara Office - It's just libreoffice.
Also font is another issue, even though you install MS fonts on linux, static fonts and variable fonts are not being installed so libre/only cannot use it and finds another font and text overflows from page.
OnlyOffice - I like it, looks modern but soo many bugs (even on csv), not enough customization, not enough shortcut (cannot even start a presentation from current slide using a shortcut). Most of my powerpoint presentations text change positions as well.
WPS Office - Half of the app is still in chinese and so many options are missing.
Softmaker Office - People say that it's perfect etc. but all I see is an app asks for money.
Microsoft 365 Copilot Online: Works so slow even with a fast connection. Nothing microsoft did after windows 7 ultimate was good.
EuroOffice - Since OnlyOffice made by a russian team, another team took the code of it and remade it and said it's better and called "EuroOffice" and now there is an argue. But Euro-Office is not designed for stand-alone use, but developed to be a web based and integrated in another product that handles documents, for example a file sharing solution, an online wiki, a project management tool and so on.
So that was the reason I had to come up with PlayOnLinux+wine solution (which is not perfect either) but at least I can work with excel instead of reporting bugs every time I open an excel/powerpoint file.