Nameplate
The member's panel beside every post, the way traditional forums have always shown it: who wrote this, and who they are on this forum.

Under each author's avatar:
Rank: their visible groups, as coloured labels. Ladder's post-count ranks are groups, so they show here automatically.
Posts and, if you want it, discussions.
Likes received, with Flarum Likes.
Best answers, with FoF Best Answer, for members who have any.
Join date.
On a phone there's no side column, so the same details sit in one line beside the author's name:
<img src="https://raw.githubusercontent.com/ernestdefoe/nameplate/main/screenshots/phone.png" alt="On a phone: the member's post count, likes and join date in one line beside their name" width="390">
Prefer that compact line everywhere? It's a setting.
Signatures
Nameplate doesn't add signatures. FoF Signature does that well. When it's installed, Nameplate adds two things it doesn't have:
Show a member's signature once per discussion. Their first post on the page keeps it, and their later replies don't repeat it. (An admin setting.)
Hide signatures. A switch for each member, under Settings → Reading, to stop seeing other people's signatures.
Settings
Admin → Nameplate:

Layout: a panel under the avatar (a line on phones), or one line under the name everywhere
Show: rank, post count, discussion count, likes received, best answers and join date, each on or off
Signatures: once per discussion
It uses your theme's own colours, so it fits the default theme, Bespoke and others without styling.
Good to know
No extra load per post. Post counts, join dates and groups already arrive with every post. Likes received is the one figure that needs counting, so it's cached for each member and refreshed whenever one of their posts is liked or unliked.
Optional extensions stay optional. Likes and best answers only appear when those extensions are installed; nothing breaks without them.
Installation
<code>composer require ernestdefoe/nameplate
php flarum cache:clear</code>
Then enable Nameplate in the admin panel.
Updating
<code>composer update ernestdefoe/nameplate
php flarum cache:clear</code>
Licence
MIT.