Parametrized test_json_table_schema module
- [X] closes #19070 
- [X] tests added / passed
- [X] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

Could potentially consolidate all of the ``dtype`` tests further but didn't want to rock the boat too much
# [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=h1) Report
> Merging [#19128](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=desc) into [master](https://codecov.io/gh/pandas-dev/pandas/commit/f6c0f8a17005e7aaffa6de1b429b2cdf9889459f?src=pr&el=desc) will **decrease** coverage by `0.02%`.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/pandas-dev/pandas/pull/19128/graphs/tree.svg?width=650&height=150&src=pr&token=eZ4WkYLtcO)](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=tree)

```diff
@@            Coverage Diff             @@
##           master   #19128      +/-   ##
==========================================
- Coverage   91.53%   91.51%   -0.03%     
==========================================
  Files         148      148              
  Lines       48780    48780              
==========================================
- Hits        44651    44639      -12     
- Misses       4129     4141      +12
```

| Flag | Coverage Δ | |
|---|---|---|
| #multiple | `89.88% <ø> (-0.03%)` | :arrow_down: |
| #single | `41.61% <ø> (+0.01%)` | :arrow_up: |

| [Impacted Files](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=tree) | Coverage Δ | |
|---|---|---|
| [pandas/plotting/\_converter.py](https://codecov.io/gh/pandas-dev/pandas/pull/19128/diff?src=pr&el=tree#diff-cGFuZGFzL3Bsb3R0aW5nL19jb252ZXJ0ZXIucHk=) | `65.22% <0%> (-1.74%)` | :arrow_down: |

------

[Continue to review full report at Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=continue).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=footer). Last update [f6c0f8a...16d0262](https://codecov.io/gh/pandas-dev/pandas/pull/19128?src=pr&el=lastupdated). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments).
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