This seems like a plan in direct response to U Mobile's U Home 5G plan

If it's truly "unlimited" then it could be considered since everyone is riding on DNB
(Gotta check the fine print in the TnC)

However 5G coverage in this case would be quite important as there's only 100gb quota for that
Where as U Mobile has it all sharing the 1000GB

As for hightechgadgets8 you can refer to the U Home 5G thread
There are some cheap ones around rm700 or so, performance will vary but the discussion about which is the best is over there
Most seen to suggest 3/EE UK rebranded Zyxel modems

Yes just introduced a newer and improved model of their 5G modem known as the Yes 5G Infinite Gateway Pro

The features of this modem having the same default web management IP, a Snapdragon based chipset, 2X 2.5G Ethernet port and same coloring signal quality bar (except reposition to front of modem instead on top) hints that it's a brand Z model under the cover.

Do we know of any other brands or model with the features above?

https://www.yes.my/yes5gwirelessbroadband/

EDIT: It's an Oppo 5G T1 CPE with SD X55 chipset used by Three HK?

Yeacomm is Mediatek based not Snapdragon. It only has 1x2.5G port+1x1G port this one has 2X 2.5G Ethernet port.

There are very few SDX55 based model I'm aware in the market which have 2x2.5G Ethernet port except for the Zyxel.

Also it is among the most expensive 5G modem in the market. The Zyxel NR5101 for example is selling for US$1299 now.
https://www.4gltemall.com/5g/5g-cpe/zyxel-5g-router.html

This one looks almost identical to the Zyxel NR5307 with the number of LEDs and position of the WPS button but without WiFi7 probably customized by the OEM manufacturer directly.
https://www.4gltemall.com/zyxel-nr5307.html