LiveCharts2 VS Helix Toolkit

But I think some of this stuff is already handled in Avalonia ecosystem like https://github.com/Mapsui/Mapsui, https://github.com/beto-rodriguez/LiveCharts2 and few others...

As far as Uno Platform goes, one can use components from WinUI and Windows Community Toolkit (WCT); so you have hundreds of UI components to work with out of the box, including some must-haves like Data Grid in WCT. Some bigger component vendors have put out their betas i.e. https://www.infragistics.com/products/uno-platform or https://www.syncfusion.com/blogs/post/syncfusions-first-control-for-uno-platform-charts.aspx . I do agree this 3rd party ecosystem eventually needs to get more love from bigger vendors, or other new ones will also step in - i.e. Live Charts has support for Uno Platform https://github.com/beto-rodriguez/LiveCharts2 or MapsUI https://mapsui.com/documentation/getting-started-uno.html

It is beta now, but should be ready for production soon, The library will also provide multiple ready-to-go themes and a high-performance package.

LiveCharts2 is a charting library completely written in C# and it is a full rewrite of LiveCharts, now LiveCahrts can run everywhere MAUI, Uno Platform, Avalonia, Xamarin, WPF, WinForms, WinUI, console and on the server side.

Apex charts will definitely do the job This is one alternative I found while digging yesterday: https://github.com/beto-rodriguez/LiveCharts2

Live charts is a cross platforms charting library .Net, to get started go to https://lvcharts.com and take a look at the instalation guide of your target platform the web site contains all the samples provided in this repo, docs and more.

try version 2! https://github.com/beto-rodriguez/LiveCharts2

About ditching WPF and using Unity: it should be possible without any problems, maybe outside of the license but that of course depends on the use case. You could also probably use helix, it's whole thing is supporting 3D in WPF.