I think the recommended method is to set up the desired profile in each addon first; i.e. in Bartender4, switch to or create the profile "Profiletest1" and configure it.
But, for addons that do have native profile support through AceDB, typing "/reflux switch Profiletest1" probably creates the profile if it doesn't exist, since the method of creating a new profile through AceDB is simply to switch to a profile that doesn't yet exist. I'm not sure if the same applies to non-AceDB addons, or addons without any native profile support. I don't actually use Reflux.
Created by switching to a default, and I'm guessing it emulates every addons' profile... somehow I feel I'll crash by doing so lol... And I know it came through as if I ain't tried playing around with it, but while very sad to say, when it comes to command line interfaces like reflux has, I tend to get on the fail boat and sail away without ever nailing the dock for the rest of my life. So I thought asking and getting a general understanding of it all would be better :p
For tracking specific buffs (eg. as a feral druid I need to make sure I keep the appropriate debuffs on my target) I use Auracle. It only does icons, and isn't very configurable appearace-wise, but it does "buff grouping" (eg. I don't care whether my Mangle, another druid's Mangle, or a warrior's Trauma is up on the mob, only that one of them is).
While waiting I downloaded Simple Buff Bars and playing around with them I kinda got them to look close to the way I wanted, and in general managed to make it work out nicely. As for Auracle, I'll probably give that a shot.
Yes, I do have an unconfigured Quartz at the moment. I plan on punching it straight today since have been a little bit busy with real life stuff, and yet, having added SBB as mentioned earlier those annoying bars went away... I'm guessing it has some auto detection or something lol, or for some reason they were hidden. I'll be checking it out.
Thank you a lot for your reply, it has helped me a great deal for sure, appreciate it ^^