Japanese language: Supplements for Digits, Counters, Popular readings, etc.

I am a native speaker of Japanese.
This collection, but I felt uncomfortable with it, so I have an opinion.

How many native speakers have verified this collection and in what ways?
Better to have multiple native speakers verify the collection, including my post.

2020-11-14: I also mentioned it in Post #41 on Help create Common Voice's first target segment.

Requests & Questions

Digits

Also, the reading of Informal in the current Single-digit numbers + yes + no table is the way it should be read when a counter is added. For example: ひとhito tsu, ふたfuta tsu, and っつyo ttsu.
If Common Voice is going to collect the readings when the counter is excluded, there is no problem, but there are some readings that are not used by the numbers alone. For example, yo and ya. (These are not incorrect readings, but today they are usually read adding a counter.)

Example

The intended use-case is talking to an automated system over the phone. In this case, how would these numbers be read if you were talking to a voice-bot, counting out loud, or reading a long number out loud digit-by-digit?

Yeah, I would read Use Case like this:

Example of Reading
言葉 (Word)漢数字 (Kanji)読み (Reading)
0ぜろれいまる
1いち
2
3さん
4よん
5
6ろく
7ななしち
8はち
9きゅう
Heyヘイ
Firefoxファイアフォックス

With a counter

In Japanese, we count as いちone, two ......, but adding a counter is also popular. The counter changes according to the object to be counted, but if there is no specific object in particular (i.e., the universal counter), it is tsu or ko.

数字 (Digit) (tsu) (ko)
1ひと一個いっこ
2ふた二個にこ
3みっ三個さんこ
4よっ四個よんこ
5いつ五個ごこ
6むっ六個ろっこ
7なな七個ななこ
8やっ八個はっこ
9ここの九個きゅうこ

Ancient reading

Even today, there are people who count this way, but it is rare.

I don't know the exact reading, either; I've searched the web, and while there is a trend, it's not uniform.

数字 (Digit)読み (Reading)
1ひー
2ふー
3みー
4よー
5いついー
6むー
7なななー
8やー
9こここー

Reference