If you want the Switch Online N64 controller, you'll have to wait until 2022
Amazon.com: Hyperkin "Admiral" Premium BT Controller for N64 (White) - Nintendo 64 : Everything Else
Nintendo 64 controller - Grey (Short Handle) - Walmart.com
The N64 controller was a weird but essential introduction to joysticks - The Verge
Amazon.com: Hyperkin "Admiral" Premium BT Controller for N64 (Black) - Nintendo 64 : Everything Else
Tribute64 Controller N64® Port - Classic Grey
N64 bluetooth gamepad | Hackaday.io
Retro-Bit rb-8bd-6584 Wireless Bluetooth N64 controller for Andoroid iOS and PC Grey - Newegg.com
Shut the front door! 8bitdo is making a Bluetooth N64 controller! : r/RetroPie
Bluetooth Nintendo 64 Controller Receivers Available | RetroRGB
I made a Bluetooth Nintendo 64 Controller using an 8Bitdo Mod-kit. : r/retrogaming
N64 Switch Online Controller has arrived! : r/NintendoSwitch
RB8-64 Controller - Nintendo 64 Bluetooth Controller | Recalbox Forum
Admiral Premium Bluetooth Controller Purple | GameStop
Review of the Hyperkin Admiral Premium BT Controller for N64 - Nerd Techy
Retro-Bit Tribute 64 2.4 GHz Wireless Controller for Nintendo 64 (N64), Switch, PC, MacOS, RetroPie, Raspberry Pi and Other USB Devices (Classic Gray) : Video Games
New 8Bitdo Retro Bit & N64 Bluetooth Wireless Gamepad Controller Support Windows Android, Mac iOS iCade, wii u,Tablet PC|gamepad wireless pc|wireless gamepad pccontrole pc - AliExpress
Hyperkin "Admiral" Premium BT Wireless Controller for N64 Nintendo 64 - Black M07389-BK - Walmart.com
Nintendo 64 controller - Nintendo
Pair Retro-Bit x 8Bitdo RB8-64 Wireless Bluetooth N64 Controller With Box - Rare 849172006584 | eBay
The Switch N64 Controller Doesn't Play Nice With Everything, For Now - Nintendo Life