It's been a few seasons since I've done this.  Here is a faciility summery for the 20 League 1 teams.

Stadium

Level 11: 10

Level 10: 5

Level 9: 4

Level 7: 1

Average: 10.2

1 Team is building Stadium 10.

Training Center

Level 14: 1

Level 13: 5

Level 12: 5

Level 11: 3

Level 10: 5

Level 9: 1

Average: 11.6

1 Team is building Training 10.

Youth Center

Level 15: 1

Level 14: 4

Level 13: 2

Level 12: 4

Level 11: 6

Level 10: 1

Level 9: 1

Level 8: 1

Average: 11.6

3 Teams are currently building a Youth Academy, a level 12, 13 and 15. 

Fan Shop

Level 10: 13

Level 9: 5

Level 8: 1

Level 7: 1

Average: 9.5

Catering

Level 10: 13

Level 9: 4

Level 8: 2

Level 7: 1

Average: 9.5

Office

Level 10: 13

Level 9: 1

Level 8: 2

Level 7: 2

Level 5: 1

Level 2: 1

Average: 8.8

1 Team is building Office 8

Health Center

Level 12: 1

Level 11: 2

Level 10: 4

Level 9: 7

Level 8: 3

Level 7: 3

Average: 9.1

Scout

Level 12: 5

Level 11: 3

Level 10: 8

Level 9: 3

Level 6: 1

Average: 10.3

Museum

Level 52: 1

Level 47: 1

level 43: 1

Level 33: 1

Level 28: 1

Level 19: 1

Level 15: 1

Level 14: 1

Level 13: 2

Level 11: 1

Level 10: 1

Level 8: 1

Level 7: 1

Level 3: 1

Level 1: 2

No Museum: 2

Average 15.9

5 Teams are currently building museums.

A surprisingly high number, 8 teams are not building anything.