If you are struggling to level these and you've watched the videos to switch covenants but keep 1 follower and just zoom a single to 60 here's what I've learned.
Everyone says the level of your Troops is the average of your followers. The maths on that doesn't add up.
Calculate the MEDIAN of your followers and level up the followers closest to the Troop target level quickly,
P.S. Use TLDRMissions as an addon - this is superb!
Calculations based on my Kyrian 18 followers with troops at level 48 (want them to get to 50 as that should trigger the Krala, Wings of Woe mission based on comments regarding that mission):
1 60
2 60
3 58
4 60
5 60
6 60
7 59
8 49
9 49
10 48
11 48
12 48
13 48
14 47
15 45
16 45
17 38
18 48Mean: 51.66666667 (average)
Median: 48.5
Mode: 60Based on this if I get 3 of my level 48/49 followers to 50 my MEDIAN moves up and so should my troops.
Elite
Kyrian Halberdier
The highest voted Wowhead comments for this page. They are community notes, not TheWoWDB comments.
That is every comment on this page.
Details
This roster comes from the current game client's data files, so it is not a complete list of every NPC in the game - older world NPCs that are no longer in the modern client are absent.
Community notes from Wowhead · 1 comment
Top 1 shown aboveThe comments below were written by Wowhead users. They are community notes, not TheWoWDB comments. See them in context on Wowhead.
All 1 comment on this page are shown in Top Comments above.
Level and Map Tracking
The game data tunes Kyrian Halberdier for levels 10 to 60, Shadowlands content.