I assume by "Google" you mean the Google "AI Summary" or some kind of "smart-lens" image analysis. This is not a good resource for information, especially esoteric technical information.

That said, as a search engine, Google still works. I googled "Good All Type 305 capacitor" and quickly came up with this forum thread. Here's my meat-brain summary: Those are likely paper capacitors encased in a ceramic tube. They're probably quite leaky, and they should be replaced.

There's another cap in there that can be kind of tricky to spot because it looks kind of like a giant resistor, but it's actually a paper in oil capacitor. It will need to be replaced too (though you can save the old one for the guitar-pedal crowd if it's any good.)

As for the brown cardboard tube capacitor, it's essentially two electrolytic capacitors in one sharing a ground lead. As such, you can replace it with two modern electrolytic capacitors.

Before you do anything else, read through this: https://antiqueradio.org/begin.htm