Where is 4-2-3-1 the default?

Share of line-ups set out as 4-2-3-1 — the most common shape in football, and in some leagues close to the only one.

Serie B (Brazil) is the most uniform: 72.2% of its line-ups are 4-2-3-1.

Where is 4-2-3-1 the default?
League	4-2-3-1	Line-ups
1. Serie B Brazil	72.2%	704
2. Super Liga Serbia	68.7%	483
3. Primera División Peru	56.5%	542
4. Pro League Saudi Arabia	53.1%	480
5. Premier League Egypt	52.9%	588
6. Super League 1 Greece	52.1%	484
7. Serie A Brazil	50.9%	754
8. Süper Lig Türkiye	49.2%	824
9. 1. Lig Türkiye	48.3%	590
10. Major League Soccer United States	48.1%	634
11. HNL Croatia	43.1%	355
12. 1. Division Cyprus	39.8%	462
13. First League Bulgaria	39.4%	426
14. Czech Liga Czechia	38%	610
15. Ekstraklasa Poland	37.4%	478
16. CONMEBOL Sudamericana International	37.1%	202
17. NB I Hungary	36.8%	272
18. Pro League United Arab Emirates	36.7%	264
19. 3. Liga Germany	35.6%	756
20. Super Liga Slovakia	35.5%	282
21. Primera División Chile	35.4%	602
22. AFC Champions League Elite International	35%	240
23. Indian Super League India	34.3%	230
24. Premier League Russia	34.3%	478
25. Segunda División Spain	32.2%	936
26. CONMEBOL Libertadores International	31.9%	307
27. 1. SNL Slovenia	30.9%	249
28. Bundesliga Germany	30.8%	616
29. Ligue 2 France	30.5%	764
30. Premier League Belarus	30.2%	430
31. 2. Bundesliga Germany	29.9%	616
32. UEFA Europa League International	29.1%	722
33. UEFA Champions League International	28.7%	348
34. Allsvenskan Sweden	28.5%	484
35. Liga Profesional Argentina Argentina	28.5%	246
36. UEFA Nations League International	28.3%	336
37. Championship England	27.9%	1,113
38. Liga MX Mexico	27.2%	684
39. Premier League England	26.8%	760
40. First League Russia	26.7%	828

Showing every competition. Major competitions only

Exact formation as recorded.