Here are mine, I'm not trying to make a collection but I got bayonet crazy way back in 2005. From top to bottom are all brand new surplus (on low sale prices), IDF Israeli M7, current issue USMC OKC3S, Eickhorn Solingen (marked Made in Germany - no Colt marking) and US Imperial M7.
At the bottom is my General Cutlery M7 with an extended handle made for 16" barrel carbine gas system.
The metal of handle was welded and grinded smooth, the rear grip of another bayonet was cut and screwed at the rear end of the bayonet handle.
After 2005 these long handled bayonets was hard to find and later they stopped making them.
My father (RIP) left me his short modern M1 Garand bayonet and his USGI M1 Garand Springfield Armory (1945) rifle.
They're nice to have during riots, the last time I used them was the 1992 Los Angeles riots (not joking I had them handy always close to me).
There's another place that's selling the extended M7 bayonets marked Colt but are very expensive now, (URL address below).
Ref:
https://www.prebanarms.com/shop/?categories=3&SingleProduct=3