On another matter, I noticed that on the table the word for "here" is sometimes in the native language and sometimes in English. It's best if we use the native word in all languages. French and German already have the native word. We should also have:
Chinese: 在这里 (simplified) / 在這裡 (traditional)
Dutch: hier
Italian: qui
Japanese: ここで
Portuguese: aqui
Romanian: aici
Russian: здесь

There's a specific flag for the Arabic language. It is commonly referred to as Arabic Language Flag, but it is also known as Flag of Hejaz.
It is also true that several sites use the Arab League flag (the one you used) for the Arabic language, eg. opensubtitles.org. But it seems to me that's not an appropriate choice, because some Arabic-speaking countries are not members of the Arab League: Chad was never a member, Syria's membership is currently suspended, and the partially recognized Sahrawi Arab Democratic Republic (a.k.a. Western Sahara) is denied membership due to Morocco's objections. Several current members have only recently joined, so they were not represented by that flag prior to that.
The Flag of Hejaz does not coincide with any geopolitical entity (country/state or intergovernmental organization) and is inclusive of all Arabic-speaking countries and people. I've uploaded it for you to see.
Whether you want to use it is entirely up to you.

Well this article suggest both flags as representation: hXXp://en.wikipedia.org/wiki/Arabic_language

Actually it boils down again that flags are not representing languages but federations, nations, countries or regions. What you say about the Arab League flag is similar valid for other flags e.g. ythe UK flag or the flag of France, there are many countries in which English or French is spoken.

I'd therefore rather drop the flags from that table alltogether. That will avoid any debates drifting in politics.

hXXp://en.wikipedia.org/wiki/Arab_League

If there are better proposals, they are welcome.

I think the association of country flag with language origin is the standard.

Here is a proposed home page announcement:  Please review and recommend modifications.

GT.ru hosts forum discussion boards in a multitude of languages other than English.  Currently we host Dutch (Nederlands), German (Deutsch), Italian (Italiano), Japanese (日本語), Portuguese (Português), Romanian (Română) and Russian (Русский).  Click here to see them:  https://community.gaytor.rent/index.php?topic=18407.msg83398#msg83398.  If you are interested in hosting a language board, contact the Helpdesk.

edit: Român -> Română

at first, I intended to put the all flags like China, Hongkong, Taiwan… but gave up at once.
because that was hard work and I didn't have some flags.
and then I wondered whether we need more flags-- i.e. Quebec? just too much for me!
but we might make it a game everyone join and play.  ::)

edit:
at first -> when I was drafting the table  :afr: :-[ ;D

As to the flags:
Purely flags represent regions, countries, nations and federations, not languages. Unfortunately there exist no common known graphic representation of languages.

Using a flag shows it's limits where a language is official of multiple countries, e.g. English, French, German, Arabic etc. … or a country got multiple languages (Switzerland: German, French, Italian; Belgium: Flemish, French, German; Spain: Castilian, Catalan; USA: English, Spanish,; Canada: English, French; ...)

So we'll need to chose the country's/or region's flag from which the language inherited it's name and that should not be understand as discrimination of the other countries in which that language is used.