All of those can be connected to simulators like Zwift or a host of others and provide way more training options than you can get on a high priced, proprietary "Peloton" spinning bike no real ergo features.
For example, if you want to ride in an actual indoor peloton simulation and make use of drafting for fun and profit, you want something like a Tacx Neo running Zwift ...IMHO.
If you ditch "Peloton" and go with what the pros train on you can use any smart watch you like.
* It's in quotes because peloton is a common word in wide usage in cycling and this company, "Peloton", has tried to trademark it. They've spent a not inconsiderable amount of time and money threatening bloggers using it in it's true meaning.