There are six different types of podcast formats according to Charli Prangley:

1. Interviews are podcasts where there's a host(s) interviewing their guest. Example podcast: Richer Soul
2. Conversational podcasts are podcasts where the host(s) talks about certain topics. Example podcast: The Tolkien Road
3. Educational podcasts normally have more than one host and center towards a certain topic that is educational. Example podcast: A Way With Words
4. Solo-casts are podcasts that center towards the podcast host and their experiences. Example podcast: Einstein Blueprint
5. Non-fiction storytelling are podcasts where the host(s) talk about real stories that have happened in the world around us.  
6. Podcast Theatre podcasts are basically radio drama but in podcasts. It would have sound effects and voice actors to make it a TV show, but video.

Some podcasts episodes are solo-casts, and others are interviews. It's a piece of cake to edit if it's solo, but interviews are a different story. Interviews are harder to edit because if one person needs editing, you don't want to edit the other person out. One of my clients is always interviewing, but thankfully, he always sends us the podcast episodes in a "Stereo" channel, which means that the host and guest are separated from left to right. How does this make it easier? Because in Audition (the program I use to edit podcasts) you can turn off either left or right. For example; if the host (who's on the left) has a phone call, and the guest (who's on the right) is speaking at that moment, I wouldn't want to cut out what the guest is saying, so I just silence the right side, and then I can get to business with the left side.

If you're editing, and you hear an "um", then, of course, you'd want to take it out. But one of the things that can ruin the edit, is if the sentence still needs it's "break". What I mean is that normally when people say "um", it means that they're thinking of what next to say, so they just blurt out "um". But when you take out that space, the listeners can hear/tell that something was cut out. Think about how robots would speak; they just say the words with no expression and no break until they finish their sentence. That's how it can sound if you don't clean out the "um" right. What's the secret? Replacing it with a nice (not totally silent) piece of sound that has nothing except the sound of the quiet white noise in the background of the person who's talking. That way, it sounds like the speaker is thinking silently, instead of the annoying "um".

A few days ago I ordered a pair of wireless Bluetooth MPOW headphones, and they just came in yesterday. They are excellent! ⭐⭐⭐⭐⭐ five stars! You can connect them to your phone or computer by Bluetooth or just using an AUX cord. When it's connected to a phone, you can answer and decline calls by pressing a button on the headphones. It even has a mic, so when you're on a phone call, you can just talk through the mic, instead of having to be right next to your phone. But the best part about it (which was what I was looking for) is that it was very noise canceling. When I'm editing, there's always a lot of noise in our house (I have eight siblings, so you can imagine why it's always loud), and it's super distracting when I hear something that I think is coming from the podcast, but is actually my baby sister.  Oh! I forgot the very BEST part of it! It's...*drum roll*...COMFY! Yep, you know by how I emphasise it with CAPS, Bold, Italic, and Underscore that that is very important!

I recorded a short video showing how I edit, and what I take out, and how this helps professional podcasters sound nice and smooth.

https://soapbox.wistia.com/videos/yPqGTgz33U