I use Gboard.

The main things I like about it are:

• Very customizable (I like having number row always visible, and having long press for symbols on each letter).
• Has gif support built in.

My biggest pain point is:

• It auto corrects words that are spelled correctly to other words. I type “our” and it changes to “out”, I recently typed “purpose” and it changed it to “purple”. Autocorrect is awesome and necessary, but I hate that it corrects words to other words and not just typos. I wish I could find a keyboard that has the things I like without this annoyance.

Am I looking for a unicorn? Let me know! 😄