If you know the channel layout of your actual lights, you can use the Avolites fixture finder, Chamsys fixture finder or fixture.id to find a fixture with the same channel layout. The Avolites finder also tells you if there's a capture profile for the result fixture, as they have capture integration in their consoles.
In capture, once you've inserted a fixture into the project and patched it you can switch the universe view to 'Fixture' mode, rather than the default 'channel' mode. This shows you the channel layout and current values of each fixture, but isn't a particularly efficient way to find a matching fixture.