Cover common isinstance calling patterns with some overloads
#15664
| Job | Run time |
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| 35s | |
| 49s | |
| 1m 8s | |
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| 1m 43s | |
| 1m 42s | |
| 1m 54s | |
| 1m 35s | |
| 59s | |
| 26s | |
| 44s | |
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| 49s | |
| 52s | |
| 16m 26s |