We actually have statistics over the last 90 days for this overall. The table is as of 08/02/2023 at about 0100 UTC
| Site | Migrations | Rejection percentage |
|---|---|---|
| Webapps | 72 | 29% |
| Stack Overflow | 67 | 44% |
| Android | 34 | 8% |
| Ask Different | 21 | 9% |
| Raspberry Pi | 3 | 0% |
| DBA | 3 | 0% |
| Serverfault | 3 | 33% |
| Webmasters | 2 | 0% |
| Wordpress | 2 | 0% |
| Hardware Recommendations | 2 | 0% |
| Retrocomputing | 2 | 0% |
| Code Review | 1 | 100% |
| Emacs | 1 | 0% |
| Gaming | 1 | 0% |
| Vi | 1 | 0% |
| Sharepoint | 1 | 0% |
| Software Recommendations | 1 | 0% |
| Security | 1 | 0% |
In theory we could dig further but unfortunately, there's no 'better' canned statistics + quite a lot of questions are deleted on their target sites. That said, we migrate pretty sparingly all in all. Its generally a good thing to keep in mind, and migrating great things in the 'wrong' place is a noble goal, but it isn't exactly a huge problem.