I'll start the thread with my Squads on UT.
A lot of people recommend you to have 1 squad on Ultimate Team but, ehm, I'm trying to have some fun too and variety, also testing players.
Next pictures will be the 3 squads I have, Portuguese/Liga NOS, Spanish/LaLiga and Brazilian. I've been playing since November/December.
My Portuguese/Liga NOS squad is my favorite right now, VERY SOLID in the FUTChamps league, works better than my Spanish one, it's still in work tho, I'm trying to get Quaresma and Nani Inform, so I can have Shoya Nakajima has a power sub. I've been testing a lot with this squad, and Joao Moutinho's card, which is 81 rated and 700 coins is overpowered with this squad, tho he's one of my power subs, he's not fast like I enjoy having on my second half, but the dude is short so the ball sticks to him and he'll score out of the box very easily.
Spanish/LaLiga, my first squad on FUT19, took me A LOT to build this, tho I was lucky to catch Coutinho and Kroos in a lower price than they usually are, even tho there's a lot to talk about Coutinho. Gerard Moreno is a 20k gem on the market, he'll score inside the box goals that are just unbelievable. Even tho it's my strongest squad, not my favorite. The portuguese squad is way more agile.
I could've Casemiro as my CDM but Kondogbia is a beast and a bugged card in game, legit wall. I usually put Ousmane Dembele as RW and Promes (one to watch card) as LW on the second half, I'll also play aggressive with a CAM/CF with Inaki Williams (switches with Kroos).
My most recent built squad and still in work, Brazilian squad. I want to switch Talisca and Paulinho for Firmino and Pato inform. I'm not sure yet if I wanna buy Fabinho to be my CM/CDM, Allan is pretty good and he's cheap af. Coutinho here as LM does a better job for me than he does in the LaLiga squad as LW, he's just more inside the box or close to it for a finesse shot too, his 86 pass is highly dangerous.
I could play Malcom as RM but I use him as my power sub because Hulk is just insane, 86 shot and 88 physicality, he's not the fastest but you set this dude out of the box and you will score no matter what (just like Paulinho will).