Technically, it's the same as it was with Skype - it's just that the colours are switched up this time. Skype for Business had blue-on-white, Skype personal had white-on-blue. Now it's the other way around, and since it's not the entire icon but rather just the T overlay on it... it's that much harder to see. Not that any of this makes the whole mess excusable. I'm just baffled by the myriad of bad decisions around W11, from features through design to the whole rushing it out the door bit. And still they come....
And I mean - look at what we have here. Despite already having a full-blown Microsoft account, I had to basically create one here and then link it to that just to be able to comment, and it doesn't even use my MS account's profile picture. Despite having all this segmenting and fragmentation amidst all their stuff - you cannot delete your old Skype username from your account, it's just not possible. In fact, you cannot delete your Skype account at all without closing your entire MS account as a whole. As mind-boggling as this entire Teams thing is, it's more expected than surprising.