Uncommon Formations you should try

[Tomiwa]

4-2-1-3
ST ST ST
Am
CM CM
Lb CB Cb RB

4-2-2-2 Narrow
ST ST
Am Am

DM DM
Lb Cb Cb Rb (used by Brazil in 1970)

3-6-1

ST
AM AM
LM RM
DM DM
LB CB. CB. RB (possession based football)

2-3-4-1 Argentina

ST
LW Am Am RW

LWB. DM. RWB

CB. CB.

2-3-2-2-1 Barca

ST
LW RW
Cm CM
LWB. DM. RWB (Attacking 4-5-1V)
CB. CB

5-3-2( Juventus)
ST ST

CM. CM
LwB. DM. Rwb
CB. CB. CB

4-5-1 Crane Wings

ST
Am. Am
LM. RM
DM
Lb. Cb. CB. Rb

4-2-1-2-1 Hourglass
ST
LW. Rw
Cm
DM. DM
Lb. CB. CB. Rb

4-2-1-2-1 X
ST
Am. Am
Cm
DM. DM
Lb. CB. CB. Rb

3-4-3 wide diamond
ST ST. ST
Am
LM. RM
DM
CB. CB. Cb

Hope you liked them!
PS Sorry for the bad drawing it does this on my phone.