1. Apple devices only
2. fastlane+ is geared towards improving voice and video experience over wifi, analytics is focused around providing data through DNAC assurance to better analyzing device issues like detailed roam and disassociation reasons, neighboring AP, RSSI etc.
3. they are not configured by default, here are config steps for fastlane+ and deviceanalytics
4. No, it does utilized 802.11r to enhance roam time and QOS for prioritizing voice and video traffic.
5. Its not OR question, for fastlane+ you need WIFI6 capable device and IOS14+
this is to best of my knowledge, hope it helps.
-hope this helps-